Alice Helen Brown filed a pro se lawsuit under 42 U.S.C. § 1983 in the Northern District of California, alleging that a traffic stop conducted by Police Officer Ethan Miller violated her Fourth Amendment rights. The case proceeded to a jury trial where Brown sought to introduce evidence regarding her race and her prior encounters with law enforcement to prove that the officer's stop was motivated by racial bias. The district court excluded this evidence during the liability phase of the trial, ruling it was not relevant to the legal standard for a Fourth Amendment claim. Following the trial, the district court entered judgment against Brown and awarded costs to the defendants. Brown appealed, challenging the exclusion of her evidence and the award of costs.
The Ninth Circuit panel, consisting of Judges O'Scannlain, Silverman, and N.R. Smith, unanimously affirmed the district court's judgment. The court addressed the exclusion of evidence first, reviewing the district court's decision for an abuse of discretion. The panel held that the evidence Brown sought to introduce regarding her race and prior encounters was properly excluded because it was not relevant to the Fourth Amendment claim. The court explained that the constitutional reasonableness of a traffic stop depends on whether there was an objectively reasonable basis for the stop, not on the subjective motivation of the officer. Citing Whren v. United States, the court reiterated that the Fourth Amendment does not turn on the actual motivations of the individual officers involved. Regarding the bill of costs, the court found that Brown waived any challenge to the award because she failed to raise the issue in the district court. The panel noted that under Federal Rule of Civil Procedure 54(d)(1) and Ninth Circuit precedent, failure to object to a bill of costs before the district court waives the right to challenge the award on appeal. The court declined to consider other issues that were not properly raised in the opening brief or in the district court.
This decision reinforces the objective standard for Fourth Amendment traffic stops, making it difficult for plaintiffs to introduce evidence of an officer's subjective racial bias to prove an unconstitutional stop. It also serves as a reminder that procedural rules regarding bills of costs must be strictly followed in the district court to preserve the right to appeal those awards. The case is remanded with instructions to affirm the district court's judgment, leaving the plaintiff with the liability judgment and the assessed costs.
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