The bill introduces a new chapter, CHAPTER 167, titled "Detention for Federal Civil Immigration Violations," into Title 42 of the General Laws. It prohibits state and municipal government officials or bodies, or any agency or instrumentality thereof, from entering into, renewing, or agreeing to any contracts or agreements that would be used to detain individuals for federal civil immigration violations. This prohibition includes intergovernmental services agreements and any leases or agreements that facilitate the use of public real property for such purposes.

Additionally, any state or municipal governmental official or body that is a party to any existing agreement used for detaining individuals for federal civil immigration violations must exercise the termination provision of that agreement by July 1, 2025.

The bill also includes a severability clause, stating that if any part of this chapter is found unconstitutional or invalid by a court of competent jurisdiction, that judgment will not affect the remainder of the chapter. The act is set to take effect immediately upon passage.