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

S 324 prohibits New Jersey state agencies and local governments from allowing foreign companies created under the laws of a "foreign adversary" (defined as a government deemed a national security threat by the U.S. Secretary of Commerce) to participate in critical infrastructure projects. The bill specifically blocks these companies from constructing, maintaining, or controlling systems like electric grids, water pipelines, gas distribution, and communication networks. It applies immediately to new agreements but does not affect existing contracts unless they conflict with the law and would otherwise be renewed. This policy aims to prevent potential security risks, such as cyberattacks, by restricting foreign entities with adversarial ties from managing essential public services.