What is the test for having a predisposition to commit a crime?

United States v. So, 755 F.2d 1350, 1354 (9th Cir.1985). Busby, 780 F.2d at 807. But the admissibility of evidence offered as bearing on any of these factors is governed by the Federal Rules of Evidence. Because appellant objected to the trial court's exclusion of evidence he claims to be probative of his lack of predisposition, we must consider whether this evidence was admissible under the Federal Rules.

A defendant may offer evidence of "a pertinent trait of his character" under Rule

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