"Imprisoning Illegal Aliens Act;" allows State and local entities and private detention facilities to enter into agreements to detain noncitizens.

This bill (A5287) reverses New Jersey's current law by allowing state agencies, local governments (like counties and municipalities), and private detention facilities to enter into agreements to detain noncitizens for immigration purposes. It amends existing law to remove the prohibition that currently prevents these entities from entering, renewing, or extending such immigration detention agreements. The key change is replacing "shall not" with "may" regarding these agreements, effective immediately. This directly affects New Jersey's state/local governments, sheriffs' departments, and private facilities that previously could not participate in immigration detention under state law.