1. Short title This Act may be cited as the Border Safety and Security Act of 2023 . 2. Suspension of entry of aliens (a) Authority To suspend entry of aliens at borders of the United States Notwithstanding any other provision of law, if the Secretary of Homeland Security determines, in his discretion, that the suspension of the entry of covered aliens at an international land or maritime border of the United States is necessary in order to achieve operational control over such border, the Secretary may prohibit, in whole or in part, the entry of covered aliens at such border for such period of time as the Secretary determines is necessary for such purpose. (b) Required suspension of entry of aliens Notwithstanding any other provision of law, the Secretary of Homeland Security shall prohibit the entry of covered aliens for any period during which the Secretary cannot— (1) detain such covered aliens as required under section 235(b)(1)(B) of the Immigration and Nationality Act ( 8 U.S.C. 1225(b)(1)(B) )