An Act relative to immigration detention and collaboration agreements

This bill prohibits Massachusetts state and local government agencies, including law enforcement departments and counties, from entering new agreements that allow federal immigration authorities to enforce immigration laws or detain individuals. Existing agreements must be terminated within 30 days for "collaboration agreements" (which involve sharing immigration enforcement) and 90 days for "detention agreements" (which involve holding people for immigration purposes). The Attorney General can sue violators to stop the agreements, and private citizens may also take legal action. The law directly affects all covered entities in Massachusetts that currently have such agreements with federal immigration authorities.