; or (B) whose criminal conviction has been recorded in the Deportable Alien Control System and involves a crime that renders the alien removable. (3) Family unit The term family unit means a group of individuals consisting of 1 or 2 parents and 1 or more of their minor children. (4) Maritime border The term maritime border means— (A) the transit zone; and (B) the borders and territorial waters of Puerto Rico and the United States Virgin Islands. (5) Secretary The term Secretary means the Secretary of Homeland Security. (6) Transit zone The term transit zone means the sea corridors of the western Atlantic Ocean, the Gulf of Mexico, the Caribbean Sea, and the eastern Pacific Ocean through which undocumented migrants and illicit drugs transit, either directly or indirectly, to the United States. (7) Unaccompanied alien child The term unaccompanied alien child has the meaning given such term in section 462(g) of the Homeland Security Act of 2002 ( 6 U.S.C. 279(g) ). 102. Inspections, oversight, and studies (a) Family detention centers (1) Inspections The Secretary shall inspect the conditions of family detention centers, including— (A) the Karnes County Residential Center; (B) the South Texas Family Residential Center; (C) the Berks Family Residential Center; and (D) any other facilities used by U.S. Immigration and Customs Enforcement to house families awaiting immigration hearings. (2) Report Not later than 180 days after the date of the enactment of this Act, the Secretary shall submit a report to the appropriate congressional committees that includes the findings of the inspections required under paragraph (1). (b) OIG oversight The Inspector General of the Department of Health and Human Services, in conjunction with the Inspector General of the Department of Homeland Security, and after consultation with the Director of U.S. Immigration and Customs Enforcement, shall— (1) investigate allegations of abuse of unaccompanied alien children in juvenile detention centers