United States Code, Section 16901 et seq. (“SORNA”), having traveled in interstate and foreign commerce subsequent to his conviction for a sex offense, to wit, a conviction on or about September 30, 1992, in the state of New Jersey, and a conviction on or about October 16, 2006, in District Court of Kempten, Germany, did knowingly fail to register and update a registration as required by SORNA, in violation of Title 18, United States Code, Section 2250(a). (R. at 58.) The parties stipulated that Pendleton was convicted of the two sex offenses identified in the indictment and agreed that he was, therefore, a “sex offender” under SORNA.  A. Pendleton’s Registration Status Pendleton was registered as a sex offender in Washington, D.C. in 2005 and for some period of time before then, but in an email dated April 29, 2005, he informed Yolanda Stokes, the sex offender registry specialist who oversaw his registry, that he was moving to Delaware. He wrote, Effective May 1, 2005, I am moving my residence from the District of Columbia to the State of Delaware. I have already been in contact with the Delaware authority confirming my responsibilities there. . . . In case you need it, my new address is: 202 West 14th Street, Wilmington . . . 19801 [the “Wilmington Address”]. My cell phone remains unchanged . . . . (Id. at 237-38 (internal quotation marks omitted).) Stokes then closed her file on Pendleton, contacted the Delaware authorities, and sent them information regarding him. In early 2008 and again at the time of trial in April of 2009, an officer with the Delaware State Police Sex Offender Apprehension and Registration Unit searched Delaware