What is the test for determining whether a police officer had a reasonable suspicion of wrongdoing?

A determination of whether an officer had "reasonable suspicion" of wrongdoing "is not readily reduced to 'a neat set of legal rules.' " United States v. Hernandez-Alvarado, 891 F.2d 1414, 1416 (9th Cir.1989) (quoting Illinois v. Gates, 462 U.S. 213, 232, 103 S.Ct. 2317, 2329, 76 L.Ed.2d 527 (1983)). Rather, the court must consider "the totality of the circumstances surrounding the stop." United States v. Hall, 974 F.2d 1201, 1204 (9th Cir.1992); see also United States v.

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