Whether the District Court's prohibition against presenting a defense of mistake of age violated the First and Sixth Amendment rights of the defendant

1. Whether the District Court's prohibition against presenting a defense of mistake of age in a case arising under 18 U.S.C. § 225l(a) created a violation of the First Amendment? 2. Whether the District Court's prohibition against presenting a defense of mistake of age violated the Defendant's Sixth Amendment Right to present a defense?