Did Congress exceed its enumerated powers under the Foreign Commerce Clause by punishing noncommercial, noneconomic sexual acts committed by a U.S. citizen against a minor within another nation's sovereign territory via 18 U.S.C. § 2423(c) and (f)(1), when the U.S. citizen did not travel there with the intent to engage in illicit sexual conduct?

QUESTION PRESENTED Did Congress exceed its enumerated powers under the Foreign Commerce Clause by punishing noncommercial, noneconomic sexual acts committed by a U.S. citizen against a minor within another nation’s sovereign territory via 18 U.S.C. § 2423(c) and (f)(1), when the U.S. citizen did not travel there with the intent to engage in illicit sexual conduct?