What is the test for reasonable suspicion and probable cause determinations de novo?

MultiRegion, United States of America

The following excerpt is from United States v. Vasquez, 19-50275 (9th Cir. 2021):

We review the district court's reasonable suspicion and probable cause determinations de novo, "reviewing findings of historical fact for clear error and giving due weight to inferences drawn from those facts by resident judges and local law enforcement officers." United States v. Valdes-Vega, 738 F.3d 1074, 1077 (9th Cir. 2013) (en banc) (cleaned up). And when reviewing factual findings for clear error, we affirm unless the findings are "illogical, implausible, or without support in the record." United States v. Spangle, 626 F.3d 488, 497 (9th Cir. 2010).

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