Directs the President and the Secretary of Homeland Security to use existing immigration law authority to secure the southern border, reinstate or implement the Migrant Protection Protocols ("Remain in Mexico"), end so-called "catch-and-release," remove ineligible noncitizens, and tighten asylum eligibility to deter unlawful entry and protect national security. It affirms statutory authority under the Immigration and Nationality Act and urges rapid executive action to restore or adopt those enforcement policies.