"New Jersey Sovereignty Act"; places certain limitations on deployment of National Guard; directs law enforcement to maintain independence from federal government; requires reporting of certain federal government requests.

The New Jersey Sovereignty Act (S 2727) restricts the deployment of the state's National Guard for active duty combat to only situations requiring a congressional declaration of war or specific congressional authorization under Article I, Section 8, Clause 15 of the U.S. Constitution. It prohibits state and local law enforcement from providing certain federal assistance - such as immigration enforcement, sharing non-public personal data, or granting access to detention facilities - without explicit state authorization from the Attorney General or Governor. The bill mandates that law enforcement agencies immediately report all federal requests for cooperation to assess whether they comply with New Jersey's sovereignty under the Tenth Amendment. These provisions directly affect New Jersey's National Guard and law enforcement agencies by establishing clear boundaries for state-federal interactions.