Under the Federal Sex Offender Registration and Notification Act, sex offenders must register and update their registration as sex offenders when they travel from one state to another. David Hall, a convicted sex offender in New York, moved to Virginia, where he did not update his registration. He was charged with violating Sex Offender Registration and Notification Act. He claimed that the statute if unconstitutional, arguing that Congress cannot criminalize interstate travel if no commerce is involved. Is that reasonable? Why or why not? United States v. Guzman, 591, F.3d 83 (2010)