Does the exclusionary rule apply to an officer's error of law in admitting evidence obtained unlawfully from a witness?

future (id. at 427, 497 N.Y.S.2d 630, 488 N.E.2d 451 ). This analysis applies with equal force to an officer's mistake of law, and provides an additional reason to reject such mistake as a viable consideration in determining the existence of probable cause in support of the admission of unlawfully obtained evidence (see United States v. LopezSoto, 205 F.3d 1101, 1106 [9th Cir.2000] [excusing an officer's reasonable mistake of the law would defeat the purpose of the exclusionary rule, for it would remove the incentive for police to make certain that they properly understand the law that they are entrusted to enforce and obey] ).²