The following excerpt is from U.S. v. Rosales-DeEvangelista, 39 F.3d 1190 (9th Cir. 1994):
Rule 403 bars evidence that "makes conviction more likely because it provokes an emotional response in the jury or otherwise tends to affect adversely the jury's attitude toward the defendant wholly apart from its judgment as to his guilt or innocence of the crime charged." United States v. Bailleaux, 685 F.2d 1105, 1111 (9th Cir.1982).
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