The Federal Approach

The Federal Approach

Federal Rule of Evidence 611(b) adopts the restrictive approach in two sentences, and each does separate work. The first reads: “Cross-examination should not go beyond the subject matter of the direct examination and matters affecting the witness's credibility.”¹ That sentence opens two territories to the cross-examiner: the topics the direct examination opened, and anything that bears on how far the jury should believe the witness. The second sentence reads: “The court may allow inquiry into additional matters as if on direct examination.”² This is the discretion clause. It lets the trial judge reach past both territories when the circumstances of a particular trial call for it. The subsections below take the clauses in turn, beginning with how courts measure the subject matter of the direct. The last subsection addresses the form of the questions once a judge has let the cross-examiner go beyond it.

The scope limit is one application of a broader judicial power. Rule 611(a) directs the court to exercise reasonable control over the mode and order of examining witnesses and presenting evidence.³ The rule gives that control three purposes: making the procedures effective for determining the truth, avoiding wasted time, and protecting witnesses from harassment or undue embarrassment.⁴ Those purposes explain the shape of 611(b). A limit tied to the direct keeps each side's evidence in its own turn at trial and curbs the interminable, pointless inquiry that would otherwise consume the jury's time.⁵ The harassment purpose works alongside the scope limit, because a question squarely within the subject matter of the direct can still be cut off when it serves only to badger the witness. Each subsection below draws on these purposes again.

Two formulations of the same flexible provision are possible, and they differ only in emphasis. Cross-examination may be limited to the subject matter of the direct, with the judge free to permit inquiry into additional matters; or it may reach any matter relevant to any issue, with the judge free to limit it as to matters not covered on direct. Rule 611(b) takes the first formulation, so the scope-of-direct limit ordinarily applies and the judge may permit broader cross.⁶ Because the judge holds power in both directions, a party gains little by making an issue of the choice between them.⁷ The verb “should” fits that design. The exact boundary of the direct cannot be fixed in advance, and reviewing courts tend to leave a scope ruling alone absent a clear abuse of discretion that causes manifest prejudice.⁸ The Advisory Committee likewise treated scope as a matter of the order of presentation, an area in which appellate involvement is unlikely to prove fruitful.⁹

Subject Matter of the Direct

The first clause of Rule 611(b) limits cross-examination to the “subject matter of the direct examination,” and nearly every scope objection turns on how a court measures that phrase.¹⁰ A narrow reading ties the phrase to the specific facts and events the witness described on direct. A broad reading ties it to the general topics those facts belong to. Federal courts lean toward the broader reading and construe liberally what falls within the direct. The limit keeps its force all the same, because a question that opens an entirely new topic still belongs in the cross-examiner's own case.¹¹

The generous reading follows from who controls the boundary. The direct examiner chooses the questions, so if scope depended on the exact words of the direct, the direct examiner would also decide how much of the witness's knowledge the opponent may test. A lawyer could elicit one sentence of a conversation, or one stage of an event, and leave the opponent unable to ask what came next. Judges close off that tactic by allowing cross on topics closely linked to the direct, which defeats the strategy of eliciting a fragment in the hope of confining cross to an arbitrarily narrow field.¹² Two further considerations push the same way. Human events do not divide into sharp topics, so a judge asked where one subject ends and the next begins is often drawing a line the facts do not supply.¹³ And a judge usually cannot tell where a line of cross is heading, so the cross-examiner should not have to blunt the questions by announcing their destination in advance.¹⁴ The first concern protects the opponent's chance to test what the jury has just heard; the other two reflect how hard it is to police a line that the facts themselves blur.

Courts state the practical standard through four formulas, arranged here from the narrowest reading to the broadest.¹⁵

1. The historical test confines cross to the same specific facts or events the direct mentioned, and perhaps those occurring at the same time and place.
2. The connected-circumstances test adds facts and circumstances connected with the matters stated on direct, though it still implies the same transaction and nearness in time and space.
3. The explain-or-contradict test adds facts tending to explain, contradict, or discredit the direct testimony.
4. The rebuttal test adds facts tending to rebut any inference or implication from the direct, and in its legal-test form it reaches any matter tied to an essential element of a claim, crime, or defense the direct touched.

The phrasing of these formulas varies even within one jurisdiction, because the subject of any direct can be described at greater or lesser generality whatever formula a court recites.¹⁶ The federal rule is best read as endorsing the broader formulas, and many federal trial judges apply the legal test in particular, treating the subject matter of the direct as the essential elements of the claim, crime, or defense the direct mentioned.¹⁷ If a defense witness testifies on direct about the accused's mental state at the time of the act, the prosecutor may ask about distinct acts by the accused so long as those acts are logically relevant to that element, and the cross is not held to the historical events the witness described.

All of the formulas share a safety valve. Where part of a transaction, contract, conversation, or event was mentioned on direct, the remainder may be brought out on cross.¹⁸ That idea is the limiting rule seen from the other side, but it is a useful second argument when a judge hesitates, since an objection to the scope of cross must then answer a completeness argument as well.

Decided cases show where judges place the line. Two of them reach past the words of the direct and stay inside the rule. In United States v. Lara, a racketeering prosecution of members of a street gang, a codefendant named Perry testified in his own defense. His direct was ten questions long and stayed on a single carjacking, yet over objection the prosecutor cross-examined him about other crimes charged against him and his codefendants, including a murder and two attempted homicides, and about a draft letter from his jail cell accusing a former girlfriend of informing and asking that she be silenced.¹⁹ The court of appeals reviewed the scope ruling only for abuse of discretion and found none, because the questions either were related to and made relevant by the direct or bore on his credibility.²⁰ Two features of the direct supplied the connection. The government's theory was that the victim's disrespect offended the gang's code and led Perry to target him, and Perry's direct denied that the carjacking had anything to do with the gang, so the government could test that denial by asking about other crimes committed for the organization. His direct also portrayed Lara as unaware of what was coming, and the cross tried to show that this account conflicted with his earlier statement to the police and that he was covering for Lara out of a gang member's duty not to inform, which is the setting in which the letter came in.²¹

The second case reaches past the direct by a different route. In United States v. Beechum the defendant testified that he came upon a silver dollar innocently while collecting mail, put it in his pocket, and looked for his supervisor so that he could turn it in. When he was arrested he was carrying two other people's credit cards in his wallet, and the cross asked about them even though the direct never mentioned them. The court held the questions within the scope, reasoning that all evidence relevant to the subject matter of the direct falls within the scope of cross, and that the cards were relevant to intent, an issue his testimony put squarely in contention.²² The court also kept a limit in place: relevance to the direct puts a question within the scope, but exclusionary rules such as Rules 403 and 404(b) still decide whether the evidence is admissible.²³ The two decisions therefore illustrate different formulas. In Lara the cross contradicted particular things Perry had said on direct, his denial of a gang connection and his account exonerating Lara, so it fits the explain-or-contradict formula. In Beechum the direct said nothing about the cards, and the cross reached them because intent is an element the testimony put in issue, which is the legal test at work.

The next two decisions show cross that went too far. In Munn v. Algee the husband testified on direct about his wife's religious objection to blood transfusions. Over objection, opposing counsel cross-examined him about many other teachings of the faith, including Christ's return in 1914, the nonexistence of hell and of souls, and the refusal to salute the flag.²⁴ The court of appeals held that this cross was outside the subject matter of the direct, because the direct covered no belief other than the prohibition on transfusions, and a list of what the faith teaches reveals nothing about whether the couple sincerely held the one belief at issue.²⁵ The same opinion also found the questions irrelevant, and it still affirmed the judgment, since an erroneous evidentiary ruling warrants relief only when it affects a party's substantial right.²⁶ A concurring judge saw the same record differently and would have held that the cross was responsive to the direct and did not violate Rule 611(b), a reminder that reasonable judges draw this line in different places.²⁷

The next case presents a different kind of miss. In Jeffries v. Potomac Development Corp., Potomac was pursuing claims against third-party defendants and wanted to cross-examine Jeffries's expert, Charles Greene, about the third-party defendants' safety responsibilities. Jeffries had not sued those third parties, so his counsel had no reason to raise their safety responsibilities on direct, and the trial judge limited the cross to what the direct had covered.²⁸ The appellate court found no abuse of discretion. Once the topic fell outside the direct, the judge had to decide whether to allow inquiry into additional matters as if on direct, and the judge declined, in part because Potomac had never identified Greene as an expert of its own, so the cross would have prejudiced the other parties.²⁹

Munn and Jeffries fail for different reasons, and the difference is worth holding onto. In Munn the cross-examiner claimed the direct had invited the testing, and the answer was that a direct about one belief opened that belief and no other. In Jeffries the cross-examiner needed the topic for claims of its own, and the answer was that the subject of the direct follows what the calling party chose to prove, so the cross-examiner's need does not enlarge it. The topic could still come in through the judge's discretion under the second sentence of the rule, but a refusal supported by reasons such as prejudice to other parties will stand.

An alibi witness shows the same boundary. A defense witness who testifies only to where the accused was on a particular day has opened that day and that place. A prosecutor's question about the accused's finances, offered to show motive, reaches a new topic and would likely be treated as beyond the scope, so the prosecutor would have to ask the judge to relax the rule, and if motive mattered to the prosecution's case, the prosecutor should have presented motive witnesses in the state's own case.³⁰ A question about who else was at that place on that day concerns the event the direct opened and stays inside.

On an exam, the usual error is to ask only whether the question is relevant to the lawsuit. The test is relevance to the subject matter of the direct. A question can be relevant to the case and still outside the direct, as the finances question and the church doctrines were, and a question about something the witness never mentioned can be inside, as the credit cards were, because it bears on an issue the testimony put in play. Identify the topics the direct opened at the level of generality the testimony naturally carries, then ask whether the question concerns the same transaction or the rest of a conversation, explains or contradicts what the witness said, or bears on an element the direct touched. A question that meets none of these may still be allowed if it goes to credibility or if the judge permits it as if on direct, which the next subsections take up.

Credibility Questions

The second clause of Rule 611(b) extends cross-examination to matters affecting the witness's credibility, a territory the rule lists separately from the subject matter of the direct.³² Because the clause stands on its own, a question aimed at credibility is within scope as of right, even when it opens a topic the direct never touched.³³ That sets up the distinction this subsection turns on. A question about a new merits topic, such as damages raised through a liability witness, needs the judge's permission under the rule's second sentence or must wait for the cross-examiner's own case. A question about bias or reliability needs neither, because it tests the very witness the other side chose to call.

The reason credibility is always open follows from what a direct examination asks of the jury. A party who calls a witness asks the jury to believe two things: that the witness is a reliable person, and that the facts the witness relates are accurate.³⁴ Cross-examination exists to weaken the direct, and it can do that by showing that the facts are incomplete or inaccurate or by suggesting that the witness cannot be trusted to be truthful. The first route stays within the topics the direct opened. The second has no need to, since the witness's trustworthiness underlies every answer given on direct, and the credibility of a witness is therefore always implicitly at issue.³⁵ Courts read the clause generously, so that inquiry affecting credibility extends to whatever explains, modifies, qualifies, discredits, or otherwise sheds light on the direct testimony, whether or not the same matter also supports the cross-examiner's own case.³⁶ The cross-examiner makes the attack through questions to the witness, and credibility evidence from other witnesses comes in later, during the cross-examiner's own case.³⁷

The relevance test for credibility cross differs from the test for merits cross. When a question seeks facts on the merits, the ordinary standard governs, and the answer must bear on an issue in the case. When a question attacks credibility, the test asks whether the answer helps the trier of fact appraise the witness and weigh the direct testimony, even if it sheds no light on any merits issue, and the same principles carry over to Rule 611(b).³⁸ That difference is what makes the clause necessary. An inconsistent statement or a conviction has no necessary relevance to the historical merits, so a rule confining cross to merits relevance would cripple the techniques that test a witness most directly.³⁹

The recognized lines of credibility questioning fall into four groups, each of which asks whether the jury should accept what the witness said on direct.⁴⁰

1. Bias, interest, and motive: any grudge, family tie, financial stake, payment, or promise of leniency that could color the witness's testimony.⁴¹
2. Background and contacts: the witness's residence, occupation, and conversations about the case, any of which may reveal a tie to one side.⁴²
3. Capacity: testing questions that probe whether the witness could perceive the events and can remember detail accurately.⁴³
4. Prior statements and convictions: earlier inconsistent statements and convictions of crime, which have no necessary relevance to the merits but bear on whether the witness should be believed.⁴⁴

Partiality is the broadest group, because any matter that may reasonably be expected to color a witness's testimony or cause the witness to testify falsely is a proper subject of inquiry by any party. Family ties, financial interest in the outcome, business or employment relationships, and payment by a party all qualify, and in criminal cases so do the absence of charges, a grant of immunity, and a pending sentence.⁴⁵ The cross-examiner needs a good-faith basis for the factual premise of the question, which keeps the label of bias from licensing invented accusations.⁴⁶

Expert witnesses supply the clearest application. An expert on direct usually testifies about technique and opinion and says nothing about the fee, yet the cross-examiner may establish the expert's financial interest through compensation for the testimony, continued employment by a party, or a history of prior testimony for the same party or lawyer.⁴⁷ Authorities disagree about some details, such as the amount of earlier compensation or the share of total income that comes from testifying, but the better view lets the judge permit those questions because financial interest can have a powerful biasing effect.⁴⁸ In Goldberg v. Boone the Maryland court collected its own precedents and restated that an expert may be questioned about compensation received for testifying and about a history of work as an expert witness, to reveal bias or interest in the outcome.⁴⁹ One of those precedents, Wrobleski v. de Lara, approved questioning that showed a plaintiff's medical expert had testified fifty to sixty times for malpractice plaintiffs, about twenty-five of them for the same lawyer, and had earned between $30,000 and $50,000 from testifying in the preceding year.⁵⁰ None of those facts proves the opinion wrong, but each gives the jury a reason to discount it, and that is the function of credibility cross.

A criminal defendant receives the widest latitude. The accused has a constitutional right to cross-examine a witness about any matter that explains, modifies, or discredits the direct, and the court must allow wide latitude to establish the partiality of a government witness.⁵¹ Foreclosing the inquiry may be reversible error where charges were dropped in exchange for testimony, the witness is a coindictee or faces unrelated pending charges, is a paid informer, has been granted immunity, expects leniency, is awaiting sentence, or has entered a cooperation plea agreement.⁵² The reason follows from who stands to lose. A government witness with a deal has a reason to shade testimony toward the prosecution, and the jury can weigh that reason only if it hears about the deal, usually from the witness on cross. These matters are also not treated as collateral, so the cross-examiner is not bound by the witness's answers and may contradict them with other evidence.⁵³

A bias label alone does not carry a question. In Stouffer v. State, a murder prosecution, the defense asked a witness whether her former boyfriend, who was also charged, had said he was at the scene, and the court sustained the objection. The appellate court affirmed because the jury had already learned that the boyfriend was her boyfriend and had been charged, and his statement that he was at the scene would not necessarily show bias on her part.⁵⁴ The defense then asked an investigating officer about the investigation of the boyfriend and a detective about money paid to him, saying the evidence would show the bias of the police. No proffer explained why the evidence was relevant, and the boyfriend never testified, so his bias was not in issue.⁵⁵ The court added that the right to cross-examine is not absolute. The judge balances probative value against unfair prejudice, gives wide latitude for bias or prejudice, and keeps cross from straying into collateral matters that would confuse the factfinder.⁵⁶ The expert's fee was paid to the witness on the stand, while the money in this case went to someone who never took the stand.

Credibility cross has limits, because the questions are often exploratory and the standards of relevance are loose, so the judge controls the extent of the examination.⁵⁷ Too tight a rein robs the examination of its usefulness, yet unrestrained inquiry risks prejudice to the party or the witness and wasted time. Judges therefore retain wide latitude to impose reasonable limits based on harassment, prejudice, confusion of the issues, the witness's safety, and interrogation that is repetitive or only marginally relevant.⁵⁸ Even the routine question about where a witness lives can yield when safety is genuinely at risk, and courts have asked the government to submit the information to the judge privately to decide whether disclosure presents a real problem.⁵⁹ Appellate courts overturn these rulings only for abuse that causes substantial harm, and in practice they find abuse more often when the judge cut examination short than when the judge let too much in; in a criminal case the court is especially likely to find abuse when the restriction cuts off questions about a prosecution witness's bias.⁶⁰ A ruling that shuts off a topic entirely draws closer review, and a confrontation claim where one applies, than a ruling that limits how far a permitted line is explored.⁶¹

The credibility clause also leaves the rest of the evidence code in place. The court's duty under Rule 611(a)(3) to protect witnesses from harassment or undue embarrassment restrains credibility cross like any other, and Rules 403, 608, and 609, among others, restrict what may properly be asked of any witness.⁶² Rule 613 adds the requirement that a witness have an opportunity to deny or explain a prior inconsistent statement.⁶³ Those rules supply the method and limits for each form of attack and are taught elsewhere. None of them is a scope rule, so a credibility question that clears Rule 611(b) must still satisfy them.

On an exam, the usual error runs in two directions. One is to treat every new topic as out of scope, which wrongly bars questions about bias, interest, or a conviction. The other is to treat the word credibility as a password, when the clause covers only questions whose answers help the jury decide whether to believe the witness. A question about a new merits fact stays a merits question however the cross-examiner labels it, and it goes to the judge's discretion or the cross-examiner's own case.

Judicial Discretion to Expand

The second sentence of Rule 611(b) states: “The court may allow inquiry into additional matters as if on direct examination.”⁶⁵ That sentence turns the scope limit into a presumption. The first sentence tells the cross-examiner where to stay; the second tells the trial judge that the boundary can move when the case calls for it. Trial judges hold broad discretion to depart from the traditional scope rule, as they do from other traditional practices governing the order of proof.⁶⁶ The rule supplies no formula for deciding when to move the boundary, so the working questions are how closely an appellate court reviews the decision and which considerations lead judges to expand or to refuse. The standard of review comes first, because it explains why the decided cases line up as they do.

Appellate review is deferential, for reasons that follow from the problem itself. The edge of the direct cannot be located with exactness, and trial courts also need room to curb interminable and pointless inquiry, so reviewing courts are reluctant to reverse unless the record shows a clear abuse of discretion that produced manifest prejudice to a party.⁶⁷ The Advisory Committee likewise described scope as essentially a matter of the order of presentation, an area in which appellate involvement is unlikely to prove fruitful.⁶⁸ Because the rule is built as a presumption with an exception, a ruling in either direction will rarely be disturbed, and a party gains little by turning the choice into an issue.⁶⁹ A complaining party must therefore make two showings, that the ruling was an abuse of discretion and that it harmed the party, and the second showing usually decides the appeal. An error that costs the complaining party nothing will stand, while one that lets hearsay or an unfair surprise reach the jury can warrant reversal.

The most common reason to expand is efficiency for the witness and the court. The restrictive rule answers a cross-examiner who wants new matter by telling the cross-examiner to call the witness later, and that answer costs the witness a second appearance. Recall the wrongful-death hypothetical, in which the plaintiff's neighbor testifies on direct about the defendant's cell-phone use and the collision, and the defense wants to ask about the plaintiff's marriage. The neighbor will probably be called twice, first by the plaintiff on liability and then by the defendant on damages, and if that sequence would cause the neighbor great inconvenience, the court can let the defendant cross-examine on damages during the plaintiff's case-in-chief.⁷⁰ In civil cases a judge sometimes goes further and enforces a one-appearance practice, calling the witness once and letting the opponent cross-examine without limit to the direct. The judge is most likely to adopt that practice when the witness is of marginal importance and the added questions will not substantially lengthen the cross-examination.⁷¹ Those two conditions track the reason for the scope rule. The rule protects each side's control over its order of proof, and that interest is slight when the witness is peripheral and the extra inquiry is short, while the saving in time and inconvenience is real.

A second reason to expand is the value of the evidence and its tie to what the trial is about. In United States v. Carter the defendant called a witness in support of his alibis, and on cross the government asked about his statement to her that he had committed the robberies and about clothing he wore and discarded, none of which the direct covered.⁷² The trial judge invoked the second sentence of Rule 611(b) over the defendant's objection, and the court of appeals found no abuse of discretion.⁷³ The defendant was correct that the government had used cross-examination to present evidence it chose not to offer in its own case and that the evidence would not have been proper rebuttal, but the court held that showing insufficient by itself, because the answers challenged the very alibis he was presenting and carried real probative value.⁷⁴ The order-of-proof interest behind the scope rule therefore yielded to the strength of the connection to a contested issue.

In Lara the court of appeals reached the same destination by a second route. After holding the questions within the scope of the direct, it added that it would uphold the rulings even if they exceeded that scope, because the questions occupied only a fraction of the cross-examination and bore a close relationship to major trial issues.⁷⁵ The opinion also shows that courts do not read the clause uniformly. It collected decisions from the First, Sixth, and District of Columbia Circuits that treat the second sentence as authority to disregard the first, and it set against them a Third Circuit decision, Lis v. Robert Packer Hosp., that confines the discretion to “special circumstances.”⁷⁶ In a jurisdiction that follows the narrower view, a party seeking expansion needs a showing beyond ordinary relevance, so an answer should flag the split when the facts invite it.

The same discretion supports a refusal, and the considerations on that side are surprise, prejudice to other parties, and the risk of confusion or protraction. The Advisory Committee's note describes the occasions for limiting inquiry into new matter as those in which the result otherwise would be confusion, complication, or protraction of the case, shown in the actual development of the particular trial rather than fixed in advance by rule.⁷⁷ In Jeffries the trial judge declined to expand cross-examination of the opposing expert onto the third-party defendants' safety responsibilities, a subject the direct never reached, in part because the cross-examining party had never identified the witness as one of its own experts, and the court of appeals held the refusal well within the judge's discretion.⁷⁸ The danger there is surprise. A party that skips the identification step and then uses cross-examination of someone else's expert as its own examination takes away the notice that lets the other parties prepare, and the judge may reasonably refuse to reward that shortcut.

Reversal for expanding too far shows what prejudice looks like. In Lewis v. Rego Co. the witness testified on direct only to what he saw and did: he inspected the vessel on which a cylinder exploded, identified diagrams and photographs, and described tests showing that a relief valve would not lift under pressure, and no one asked him why the cylinder ruptured.⁷⁹ Over objection the opposing party was allowed on cross to draw out his opinion that a defective weld caused the rupture and then to show him a consulting engineer's report confirming that view, although the report's author had withdrawn that opinion without the witness knowing it.⁸⁰ The court of appeals held that permitting the question was an abuse of discretion and prejudicial error, because the effect, if not the purpose, of the cross was to place the report's opinion before the jury, and that opinion was hearsay that would have been improper even in ordinary circumstances.⁸¹ The decision applies the usual standard to a harmful result and does not hold that cross-examination of a factual witness is confined to facts, since the court itself recognized that the proper bounds of cross lie within the trial court's sound discretion.⁸²

Jeffries and Lewis point in opposite directions, and what separates them is the direction of the ruling and the harm that followed. In Jeffries the judge refused to expand, the refusal shielded other parties from surprise, and nothing about it called for reversal. In Lewis the judge expanded, and the expansion carried hearsay built on a withdrawn opinion straight to the jury. Both courts ran the same inquiry, a deferential look at the judge's reasons followed by a search for concrete harm. Carter fits that pattern, because the expansion there brought in probative evidence on the alibis the defendant had put in issue, and he could point to no harm beyond the government's use of cross-examination to present evidence it had not offered earlier.

Review is not equally relaxed in every direction. Where a court's restriction goes to the scope of the permitted examination rather than to how far a permitted line may be explored, the chances of reversal rise, and where a confrontation right applies, that claim adds to them.⁸³ A criminal defendant also receives wide latitude in cross-examining to establish a witness's partiality and to present a theory of defense.⁸⁴ Questions about bias fall within the credibility clause and need no help from the discretion clause, so a judge who cuts off a defendant's inquiry into a prosecution witness's bias is not exercising the power to expand or refuse new matter at all, and that ruling draws the closer scrutiny described above.⁸⁵

Counsel can influence these rulings by speaking to the factors. A prosecutor who wants to ask a defense alibi witness, whose direct covered only the defendant's whereabouts on a particular day, about the defendant's finances to show motive has reached a new topic, so the prosecutor must persuade the judge to relax the rule. The judge will want to know why the motive evidence was not offered through the state's own witnesses, and if the court is persuaded that the prosecutor sought such witnesses in good faith, it may allow the question.⁸⁶ Discretion under the Federal Rules is bounded by standards, and a lawyer who knows those standards is in a position to move the judge.⁸⁷

On an exam, the usual error is to treat the scope limit as a bar the judge cannot lift, or to assume that an appellate court will reverse a scope ruling merely because it was wrong. Either ruling is permissible, and the appeal turns on harm. Once the judge allows the new matter, the next question is how the cross-examiner must frame it, which the next subsection takes up.

Questioning on New Matter

The second sentence of Federal Rule 611(b) lets the court allow inquiry into additional matters “as if on direct examination,” and those last words answer a question the scope rules leave open: how must a cross-examiner frame questions on a topic the direct never reached?⁸⁹ The phrase says nothing about whether the judge will permit the new matter, which the last subsection treated as a matter of discretion. It governs the form of the questioning once permission is given. A cross-examiner who goes beyond the direct generally should ask non-leading questions about the new matter, because on that topic the examination is treated as a direct examination.⁹⁰ The rule therefore changes one of the most familiar features of cross-examination, and the reason for the change is clear only after recalling why leading questions are treated differently on direct and on cross.

A leading question is one that suggests the answer the examiner wants. Rule 611(c) provides that leading questions should not be used on direct examination except as necessary to develop the witness's testimony.⁹¹ The concern is that a question pushing hard in one direction can invoke a false memory, induce the witness to stop searching for what he actually remembers and accept the examiner's version, and distract the witness from details outside the path the examiner has chosen.⁹² On direct the danger is real, because the examiner called the witness and the witness is presumed friendly. The same rule says that the court ordinarily should allow leading questions on cross-examination, and also when a party calls a hostile witness, an adverse party, or a witness identified with an adverse party.⁹³ The reversal makes sense because a witness who is presumed to lean away from the cross-examiner is unlikely to absorb her suggestions, so the leading question becomes her main instrument of control. The qualities that looked harmful on direct now help: the question can awaken the witness's memory enough to dislodge an earlier account, expose limits or inaccuracies in that memory, and focus attention on important details.⁹⁴

Both halves of Rule 611(c) therefore rest on one premise, which is whether the witness is likely to go along with the examiner's suggestions. For new matter that premise changes. A cross-examiner who goes beyond the direct is no longer testing the other side's account but putting in evidence of her own, and on that evidence the witness is in effect hers. Courts that follow the restrictive rule describe this by saying that the cross-examiner adopts the witness for the new topic: the questioning is formally cross-examination but functionally direct, and Rule 611(b) embraces that notion.⁹⁵ The danger of suggestion returns with it, since a witness supplying the examiner's own proof is as open to leading as any witness on direct. A second reason supports the same result. A lawyer who ventures into new material has typically had a chance to prepare the witness, because the lawyer would not otherwise risk the venture, so the court has little reason to hand her the control that leading questions give a questioner facing an unknown quantity.⁹⁶

The neighbor in the wrongful-death hypothetical shows both modes at work. If the judge, to spare the neighbor a second trip to court, lets the defense ask about the marriage during the plaintiff's case, counsel must use an open question such as “What, if anything, did you observe about arguments between the couple?”, and a question such as “Isn't it true they fought violently?” draws a sustained objection.⁹⁷ In that same cross-examination, counsel may ask the neighbor leading questions about the telephone call and the collision, because those subjects were within the direct, and on them the ordinary permission to lead applies. The form of the question follows the topic and not the witness, so one cross-examination of one witness can be conducted in both modes.

The permission to lead on cross rests on the witness's presumed unfriendliness, so it can fail even when every question stays within the direct. The court has discretion to prohibit leading where the witness is partial to the questioner, and the standard case is a witness called by an opponent and treated as hostile under Rule 611(c), who is then questioned by his own lawyer or by other friendly counsel.⁹⁸

The ruling is discretionary, since the rule says only that the court ordinarily should allow leading questions on cross. One federal district court that restricted leading questions put to a witness who was still doing work for the questioner's side, and who had shown no adverse tendencies, reasoned that the Confrontation Clause secures the opportunity to cross-examine and does not guarantee effective questioning in whatever manner the defense might wish; it added that it would allow leading if the witness proved difficult.⁹⁹ The new-matter rule and the friendly-witness rule are separate applications of the same premise, because either way the leading question loses its justification when the witness is no longer presumed to resist the examiner.

The adoption idea has a second consequence, which students often get wrong. Under the traditional rule against impeaching one's own witness, a party who had adopted a witness on new matter might have been barred from attacking that witness's answers. Rule 607 removes that obstacle by letting any party impeach any witness, so the cross-examiner who elicits new matter may still impeach the witness on it, for example with a prior inconsistent statement.¹⁰⁰ Adoption therefore governs only the form of the questions and leaves the examiner free to attack the answers. The consequence also runs the other way: the party who originally called the witness may lead the witness and impeach the witness on the matters raised beyond the scope of the direct.¹⁰¹ As to the new topic, the opponent has put the witness forward, so the original caller stands where a cross-examiner ordinarily stands. An answer that assumes leading is allowed because the exam says cross-examination misses the adoption point, and an answer that assumes adoption forbids impeachment misses Rule 607.