; and (B) acts and conditions occurring or existing before, on, or after the date of the enactment of this Act. (2) Amendments made by subsection (c) The amendments made by subsection (c) shall take effect upon the date of the enactment of this Act, and sections 235 and 236 of the Immigration and Nationality Act, as amended by subsection (c), shall apply to any alien in detention under provisions of such sections on or after the date of the enactment of this Act. 505. GAO study on deaths in custody The Comptroller General of the United States shall submit to Congress within 6 months after the date of the enactment of this Act, a report on the deaths in custody of detainees held by the Department of Homeland Security. The report shall include the following information with respect to any such deaths and in connection therewith: (1) Whether any such deaths could have been prevented by the delivery of medical treatment administered while the detainee is in the custody of the Department of Homeland Security. (2) Whether Department practice and procedures were properly followed and obeyed. (3) Whether such practice and procedures are sufficient to protect the health and safety of such detainees. (4) Whether reports of such deaths were made to the Deaths in Custody Reporting Program. 506. GAO study on migrant deaths Within 120 days of the date of enactment and by the end of each fiscal year thereafter, the Comptroller General of the United States shall submit to the Committee on the Judiciary and Committee on Homeland Security and Governmental Affairs of the Senate and the Committee on the Judiciary and Committee on Homeland Security of the House , a report on: (1) the total number of migrant deaths along the southern border in the last 5 years; (2) the total number of unidentified deceased migrants found along the southern border