Federal Evidence Review brings to us a useful argument about the “notorious” slippery slope between propensity evidence and evidence admitted under Mil. R. Evid. 404(b). I’ve noted elsewhere the tendency of prosecutors of making talismanic assertions that, “it’s evidence of intent, motive, modus, your honor.”
The defense and judges need to hold the prosecution to establishing a record of why the evidence is admissible.
The interpretation and application of FRE 404(b) can be notorious – so much so that some courts have suggested that the rule established a "slippery boundary" between properly admitting evidence of a defendant’s intent and improperly admitting evidence of a defendant’s propensity. In a recent case, the Seventh Circuit briefly explored where a court had slipped beyond the boundary, although the Circuit concluded the error was harmless.