Also known as:magistrate judges · magistrate · U.S. magistrate judge
Written by attorneys — see sources below.
A judicial officer of the United States appointed to assist district courts by performing pretrial and other delegated functions including the issuance of warrants and the conduct of initial appearances.
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How its tested
Common Examples
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Good Faith Reliance on Warrant
Ming Ma is arrested after officers execute a search warrant issued by Magistrate Judge Harper. The warrant later proves defective for lack of probable cause. Officers relied on the warrant in objective good faith. Evidence obtained is admitted at trial because the magistrate's issuance shields the officers from suppression.
Remote Warrant Application
Maurice Marshall is the target of a ransomware investigation. Agent Ruiz appears by secure video before Magistrate Judge Harper at midnight and transmits sworn testimony and server logs. The magistrate places the agent under oath and issues an arrest warrant based on the electronic presentation.
Monica Morgan moves to suppress statements taken during a status conference before Magistrate Judge Harper in a civil coverage action. The magistrate applies the Federal Rules of Evidence to determine whether counsel's factual recitations are admissible at the contempt hearing that follows.
Initial Appearance After Arrest
Matthew Martinez is arrested in the district where the offense allegedly occurred. No magistrate judge is immediately available. Officers bring him before a state judicial officer for the initial appearance as permitted when a magistrate cannot be located promptly.
Administrative Inspection Warrant
Marco Marquez refuses city inspectors entry to his building. The inspectors obtain an administrative warrant from Magistrate Judge Harper after showing probable cause for a housing code violation. The warrant satisfies the neutral magistrate requirement for the inspection.
Camara v. Municipal Court of City and County of San Francisco387 U.S. 523, 87 S.Ct. 1727, 18 L.Ed.2d 930 (1967)
Roland Camara, lessee of the ground floor of an apartment building in San Francisco, faced criminal charges under the city's Housing Code for refusing to allow municipal inspectors to enter his residence without a search warrant. On November 6, 1963, an inspector from the Division of Housing Inspection of the San Francisco Department of Public Health entered the building to conduct a routine annual inspection for possible code violations. The building manager told the inspector that Camara was using the rear of his leasehold as a personal residence, which the occupancy permit did not authorize. The inspector confronted Camara and demanded entry to inspect the premises, but Camara refused because the inspector lacked a warrant.
The inspector returned on November 8 without a warrant, and Camara again denied access. A citation was then mailed ordering Camara to appear at the district attorney's office. When he failed to appear, two inspectors returned on November 22 and informed him that Section 503 of the Housing Code required him to permit entry at reasonable times upon presentation of proper credentials. Camara still refused without a warrant. A complaint was filed charging him with violating Section 507 by refusing to permit a lawful inspection. He was arrested on December 2 and released on bail.
Camara's demurrer to the criminal complaint was denied in the municipal court. He then filed a petition for a writ of prohibition in California Superior Court, alleging that the ordinance authorizing the warrantless inspection was unconstitutional on its face. The Superior Court denied the writ. The District Court of Appeal affirmed the denial, and the Supreme Court of California denied a petition for hearing. Camara had properly raised and obtained consideration of the federal constitutional questions in the state courts.
The inspection program operated under Section 86(3) of the San Francisco Municipal Code, which required apartment house operators to pay an annual license fee that partly defrayed the cost of periodic inspections. The Bureau of Housing Inspection conducted these inspections at least once a year and as often thereafter as deemed necessary. The permit of occupancy for the building was not issued until the license was obtained.
Megan Moore sues a magistrate judge for damages arising from an allegedly erroneous pretrial ruling. The magistrate asserts qualified immunity. The court evaluates whether the conduct violated clearly established law at the time of the challenged action.
Harlow v. Fitzgerald457 U.S. 800, 818 (1982)
In 1968, Ernest Fitzgerald, a management analyst with the Department of the Air Force, testified before the Subcommittee on Economy in Government of the Joint Economic Committee of the Congress that a new transport plane, the C-5A, was substantially over its projected cost. This testimony apparently embarrassed the Department of Defense and the Air Force. Shortly thereafter, Fitzgerald's job was abolished in a reorganization of the Air Force. Fitzgerald brought suit against a number of officials of the Executive Branch, including petitioners Bryce Harlow and Alexander Butterfield.
Fitzgerald alleged that Harlow and Butterfield had participated in a conspiracy to violate his constitutional and statutory rights by arranging to have him dismissed from his position in the Air Force in retaliation for his testimony. As evidence of Harlow's involvement, Fitzgerald relied on a series of conversations in which Harlow discussed Fitzgerald's dismissal with Air Force Secretary Robert Seamans. He also relied on a recorded conversation in which the President later voiced a tentative recollection that Harlow was "all for canning" Fitzgerald.
As evidence against Butterfield, Fitzgerald cited a May 1969 White House memorandum. In it Butterfield claimed to have learned that Fitzgerald planned to "blow the whistle" on some "shoddy purchasing practices" by exposing these practices to public view. Fitzgerald also cited communications between Butterfield and Haldeman in December 1969 and January 1970 as evidence that Butterfield participated in the conspiracy to conceal his unlawful discharge and prevent his reemployment.
Harlow asserted that Secretary Seamans had advised him that considerations of efficiency required Fitzgerald's removal by a reduction in force. Harlow had no reason to believe that a conspiracy existed. Butterfield stated that he was not involved in any decision concerning Fitzgerald's employment status until more than a month after the termination had been scheduled and announced publicly. Butterfield never communicated his views about Fitzgerald to any official of the Defense Department.
The District Court denied the motions of Harlow and Butterfield for summary judgment based on absolute Presidential immunity or, alternatively, qualified immunity. The Court of Appeals for the District of Columbia Circuit affirmed in part and remanded. The Supreme Court granted certiorari.
May a magistrate judge issue a warrant based on sworn testimony presented by telephone or video?
Yes. Federal Rule of Criminal Procedure 4.1 expressly authorizes a magistrate judge to consider information communicated by telephone or other reliable electronic means when reviewing a complaint or deciding whether to issue a warrant.
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What must occur at an initial appearance before a magistrate judge?
The defendant must be informed of the charges, advised of the right to counsel, and may have bail set. If the defendant refuses to plead, the court enters a plea of not guilty on the defendant's behalf.
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Do the Federal Rules of Evidence apply to proceedings conducted by a magistrate judge?
Yes. Rule 1101 provides that the rules apply to proceedings before United States magistrate judges in both civil and criminal cases.
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When may officers present an arrestee to a state judicial officer instead of a magistrate judge?
When the defendant is arrested in the district where the offense was allegedly committed and no magistrate judge is reasonably available, the initial appearance may be held before a state or local judicial officer.
Supporting sources
384 U.S. 436 (1966)
…most confessions obtained through police interrogation. In India, confessions made to police not in the presence of a magistrate have been excluded by rule of evidence since 1872, at a time when it operated under British law. Identical provisions appear in the Evidence Ordinance of Ceylon, enacted in…