1. Short title This Act may be cited as the Emergency Migration Response Act of 2023 . 2. Emergency response to migration surges (a) Authority To declare an extraordinary migration event (1) In general The President, at the request of the Secretary of Homeland Security or a State or local government entity, may declare an extraordinary migration event that is of such a magnitude that an appropriate, timely, or effective response is beyond the scope of the existing infrastructure and staffing levels of the Department of Homeland Security or State or local governmental resources. The Secretary, in consultation with the heads of relevant Federal, State, and local agencies, should establish quantitative and qualitative parameters described in paragraph (2) to determine if an event is an extraordinary migration event and when such a declaration of such an event should terminate. (2) Parameters described Quantitative and qualitative parameters described in this paragraph may include the following: (A) The average number of border apprehensions per week by U.S. Customs and Border Protection compared to historical data. (B) Staffing and resources available to the U.S. Border Patrol operating in sectors affected by a migrant surge. (C) Migrant population composition. (D) Projected or assessed changes in any of the parameters described in this paragraph. (3) Review and revision The Secretary of Homeland Security, in consultation with the heads of relevant Federal, State, and local agencies, should, not less frequently than annually, review and, if appropriate, revise the quantitative and qualitative parameters described in paragraph (2). (4) Notification If a quantitative or qualitative parameter described in paragraph (2) is revised pursuant to paragraph (3), the Secretary of Homeland Security shall, not later than 30 days after each such revision notify the Committee on Homeland Security of the House of Representatives and the Committee on Homeland Security and Governmental Affairs of the Senate of each such revision.