18 U.S.C. § 2250- Failure to register
Section 2250 of Title 18, United States Code, makes it a federal offense for sex offenders required to register pursuant to the Sex Offender Registration and Notification Act (SORNA), to knowing fail to register or update a registration as required. State convicted sex offenders may also be prosecuted under this statute if the sex offender knowingly fails to register or update a registration as required, and engages in interstate travel, foreign travel, or enters, leaves, or resides on an Indian reservation.
A sex offender who fails to properly register may face fines and up to 10 years in prison. Furthermore, if a sex offender knowingly fails to update or register as required and commits a violent federal crime, he or she may face up to 30 years in prison under this statute.