Messerschmidt v. Millender
The Supreme Court ruled that police officers who searched a grandmother's home for all firearms and all evidence of gang membership, while investigating a single shooting, were still protected from being sued personally, because a magistrate, a supervisor, and a prosecutor had all approved the warrant beforehand.
The decision makes it harder for people whose homes are searched under an overly broad warrant to sue the officers who obtained it, so long as other officials signed off on the warrant along the way, even if the search itself later turns out to have been too broad.
How it got here: A federal trial court found the warrant overbroad and denied immunity; the Ninth Circuit, sitting en banc, affirmed; the officers asked the Supreme Court to review the immunity ruling.
The Case in Depth
What happened
Jerry Ray Bowen attacked his ex-girlfriend Shelly Kelly with a sawed-off shotgun after she called the police on him, and fired several shots as she fled. Detective Messerschmidt investigated and obtained a warrant to search the home of Bowen's former foster mother, Augusta Millender, for all firearms and any evidence connecting Bowen to a street gang. The search found only Millender's own shotgun and some ammunition; Bowen was arrested elsewhere. The Millender family sued the officers for violating the Fourth Amendment.
The question before the Court
Could police officers who searched a home for all guns and all gang-related items under a warrant investigating one specific shooting still be shielded from a lawsuit by qualified immunity?
The Court's answer
Yes — the Court ruled that the officers were entitled to qualified immunity for the entire search, even assuming the warrant was too broad. A warrant approved by a neutral magistrate normally shields officers unless no reasonably competent officer could have thought it valid, and the Court found that standard was not met here.
Given that Bowen owned one illegal gun, belonged to a gang, had shown he was willing to use a gun to kill, and feared the police, the Court found it was not unreasonable to search for more guns and for evidence connecting him to a gang-related motive. The Court also gave weight to the fact that a supervisor, a prosecutor, and a magistrate all reviewed and approved the warrant without objection before it was executed.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
People searched under warrants that turn out to be overbroad will find it harder to hold individual officers personally liable for damages, since review by supervisors, prosecutors, or a judge can help shield officers even when the search sweeps in far more than the crime justified. Police departments retain an incentive to route warrant applications through multiple layers of review.
What changes now
This is a final merits decision resolving the qualified immunity question; the Ninth Circuit's denial of immunity is reversed, meaning the Millender family's damages claims against the officers cannot proceed. The underlying question of whether the warrant itself was constitutionally valid was not decided and remains unresolved as a formal legal matter, though as a practical matter the officers can no longer be sued over it.
What this does not decide
The Court explicitly said it was not deciding whether the warrant was actually valid or supported by real probable cause — only whether the officers could be personally sued for damages. Readers should not read this decision as approving the search itself as constitutional, only as shielding the officers from liability for it.
Concurrences and dissents
Concurrence — Justice Breyer
Justice Breyer concurred narrowly, agreeing only that the combination of circumstances — Bowen's illegal gun, gang membership, willingness to use the gun to kill, and fear of police — together supported a reasonable officer's belief that the firearms search was backed by probable cause. He did not elaborate further.
Concurrence in part — Justice Kagan
Justice Kagan agreed officers should get immunity for searching for firearms, since the law on that point was debatable enough to protect a reasonable officer's judgment. But she thought the majority went too far in also granting immunity for the gang-evidence search, since nothing in the affidavit linked Bowen's gang ties to what officers themselves called a domestic assault, and she objected to giving weight to supervisors' and prosecutors' approval under Malley.
Dissent — Justice Sotomayor
“That kind of general warrant is antithetical to the Fourth Amendment.”Sotomayor's core objection that the warrant amounted to a forbidden general search.
Justice Sotomayor argued the search warrant was a textbook general warrant, the kind the Fourth Amendment was written to forbid, and that every judge who had previously reviewed the case agreed it was invalid and unreasonable. She argued the majority ignored the officers' own contemporaneous statements that the crime was not gang-related and that they had no specific information about other guns, and that letting supervisors' or prosecutors' sign-off bolster immunity contradicts Malley. She would have affirmed the denial of immunity entirely.
How the Court got there
The legal reasoning, step by step
- The Court applied the qualified immunity standard from Malley v. Briggs: officers who rely on a warrant lose that protection only when it is obvious that no reasonably competent officer would have thought the warrant should issue, a very high bar to clear.
- On the search for firearms, the Court reasoned that because Bowen already owned one illegal sawed-off shotgun, belonged to a gang, had shown willingness to use the gun to kill, and feared the police, an officer could reasonably infer he might own other illegal guns worth searching for.
- The Court separately reasoned that officers could reasonably believe seizing all firearms was necessary to prevent Bowen from making another attempt on the victim's life, since California law allows warrants for items a person intends to use to commit a crime.
- On the gang-evidence search, the Court reasoned that an officer could view the attack as motivated by a desire to silence the victim about Bowen's gang activity, rather than purely as a breakup dispute, making gang evidence relevant to proving motive or connecting Bowen to the residence.
- The Court gave weight to the fact that a supervising officer, a deputy district attorney, and the magistrate had all reviewed and approved the warrant application without raising concerns, treating that as further support that reasonable officers could have believed the warrant was valid.
- The Court distinguished this case from Groh v. Ramirez, where the warrant's defect was obvious from a simple glance, concluding that any defect in this warrant would only emerge from a close comparison of the affidavit against the warrant's terms.
Doctrinal impact
Cases affected by this decision
Reaffirms Malley v. Briggs (475 U. S. 335)
The Court relied on Malley's test for when a warrant-approved search loses qualified immunity protection.
Distinguishes Groh v. Ramirez (540 U. S. 551)
The Court said this warrant's flaws, unlike Groh's, weren't obvious from a simple glance, so immunity still applied.
Reaffirms United States v. Leon (468 U. S. 897)
The Court reused Leon's objective-good-faith standard to judge whether the officers' reliance on the warrant was reasonable.