The Act also establishes a post-conviction civil commitment scheme. Section 4248 of the Act contains the Commitment Provision, which authorizes the federal government to initiate commitment proceedings with respect to any federal prisoner in the custody of the Bureau of Prisons. Under this provision, even prisoners who have never been previously charged with or convicted of a sex crime may be civilly committed after completing their entire prison sentence. Prior to Supreme Court Review, the federal Circuit courts were split on the question of whether Congress had the authority to enact this provision. On May 17, 2010, the Supreme Court upheld the law, and ruled in "United States v. Comstock" that the Civil Commitment Provision was within Congress's authority.