ses in sexual assault prosecu- tions. 18 U.S.C.A. § 2423(b); Fed.Rules Evid.Rule 413(a, d), 28 U.S.C.A. 171 Commerce 83 fe=82.10 83 Commerce 831I Application to Particular Subjects and Methods of Regulation 831I(J) Offenses and Prosecutions 83k82.5 Federal Offenses and Prosecu- tions 83k82.10 k. Offenses Involving Activ- ity