; (B) to ensure family unity; (C) based on exceptional service in the Armed Forces; or (D) if a waiver otherwise is in the public interest. 4. Protecting veterans and service members from removal Notwithstanding section 237 of the Immigration and Nationality Act ( 8 U.S.C. 1227 ) or any other provision of law, a noncitizen who is a veteran or service member may not be removed from the United States unless the noncitizen has been convicted for a crime of violence. 5. Naturalization through service in the Armed Forces (a) In general Subject to subsection (b), a noncitizen who has obtained the status of a noncitizen lawfully admitted for permanent residence pursuant to section 3 shall be eligible for naturalization through service in the Armed Forces under sections 328 and 329 of the Immigration and Nationality Act ( 8 U.S.C. 1439 and 1440). (b) Special rules (1) Good moral character In determining whether a noncitizen described in subsection (a) is a person of good moral character, the Secretary shall disregard the one or more grounds on which the noncitizen was— (A) removed or ordered removed from the United States