Mixed Question Of Law And Fact

[w]hen... historical facts are established, the rule of law is undisputed, and the issue is whether the facts satisfy the legal rule. Pullman-Standard v. Swint, 456 U.S. 273, 289 n.19 (1982). Mixed questions generally require the consideration of legal concepts and the exercise of judgment about the values that animate legal principles. Boone v U.S., 944 F.2d 1489, 1492 (9th Cir. 1991)