Decoupling from Foreign Adversarial Battery Dependence Act

S 450 prohibits the Department of Homeland Security (DHS) from using federal funds to procure batteries produced by specific Chinese companies starting October 1, 2027. It directly affects DHS procurement for agencies like U.S. Customs and Border Protection, Immigration and Customs Enforcement, and the Transportation Security Administration. The bill bans batteries from entities including CATL, BYD, and others listed under forced labor or military ownership rules, with limited waivers allowed for national security assessments or research. DHS must report on cost and mission impacts within 180 days of enactment.