Prohibits any foreign company created under laws of foreign adversary from participating in critical infrastructure.

New Jersey's S 731 prohibits state agencies and local governments from allowing foreign companies created under the laws of a "foreign adversary" to participate in critical infrastructure projects. A "foreign adversary" is defined as a country determined by the U.S. Secretary of Commerce to pose significant security threats to the U.S. The bill specifically bars these companies from construction, maintenance, or control of infrastructure including power grids, water systems, gas pipelines, and communication networks. Existing agreements conflicting with this law cannot be renewed, though pre-enactment agreements remain valid until expiration.