This bill extends Department of Homeland Security (DHS) funding through May 22, 2026, covering prior gaps and ensuring continued pay and operations. It maintains regular funding for U.S. Immigration and Customs Enforcement (ICE) and U.S. Customs and Border Protection (CBP). The bill also adjusts funding for key agencies including the Transportation Security Administration (TSA), U.S. Secret Service, Cybersecurity and Infrastructure Security Agency (CISA), and Federal Emergency Management Agency (FEMA), and rescinds $2,362,000 from the DHS Nonrecurring Expenses Fund. Additionally, the bill requires monthly DHS reports on anticipated southwest border migrant arrivals and removes certain Senate notification rules.