What organizations or interest groups have filed Amicus Curiae briefs to Carr v. United States?

An Indiana federal district court convicted Thomas Carr of violating the Offender and Registration and Notification Act. The Act imposes penalties on anyone who is a convicted offender, and traveling in interstate or foreign commerce, knowingly fails to register as a offender, unless he proves that "uncontrollable cirstances" prevented him from doing so. On appeal, Carr argued that he did not violate the act because he traveled before the Act was ped. The Seventh Circuit held that the Act does not require that the defendant's travel postdate its enactment, and, consequently, affirmed the district court.