of victim by defend- ant's lawyer as to why victim had not come forward sooner. 18 U.S.C.A. § 2423(b); Fed.Rules Evid.Rule 403, 28 U.S.C.A. •622 Julie B. Porter, Assistant U.S. Attorney (argued), Office of the United States Attorney, Chicago, IL, for Plaintiff-Appellee. Susan Kister, Attorney (argued), St.