The proposed bill establishes a new chapter in Title 43 of the Revised Code of Washington (RCW) focused on federal immigration enforcement. It emphasizes the state's commitment to protecting immigrant communities while cooperating with federal immigration authorities. The bill defines key terms such as "federal immigration agency," "immigration detainer," and "sanctuary policy," and explicitly prohibits state entities and local governmental entities from adopting sanctuary policies that impede compliance with federal immigration laws. It mandates law enforcement agencies to support federal immigration enforcement and outlines specific duties related to immigration detainers, including notifying judges and maintaining records.

Additionally, the bill repeals several existing laws related to immigration enforcement, effectively nullifying previous sanctuary policies and requiring their repeal within 90 days of the bill's enactment. It also includes provisions for the reimbursement of costs associated with housing individuals subject to immigration detainers and establishes enforcement mechanisms for violations of the new regulations. The bill aims to ensure that actions taken under this chapter are not based on discrimination and clarifies that it does not apply to the release of education records.