In general— Except as provided under subsection (b), the District of Columbia may not have in effect a statute, ordinance, policy, or practice that prohibits or restricts any entity or official of the District government from—
sending, receiving, maintaining, or exchanging with any Federal, State, or local government entity information regarding the citizenship or immigration status (lawful or unlawful) of any individual; or
complying with a request lawfully made by the Department of Homeland Security under section 236 or 287 of the Immigration and Nationality Act (8 U.S.C. 1226, 1357) to comply with a detainer for, or notify about the release of, an individual.
comply with a request made by the Department of Homeland Security under section 236 or 287 of the Immigration and Nationality Act (8 U.S.C. 1226, 1357) to comply with a detainer regarding an individual who comes forward as a victim of or a witness to a criminal offense.