Prohibits municipal ordinance to create sanctuary city; establishes State and local employee ethics violation upon noncompliance with federal immigration enforcement request.

This bill prohibits New Jersey municipalities from passing ordinances that require local officials to refuse cooperation with federal immigration enforcement requests. It directly affects mayors, city councils, and county officials who might adopt "sanctuary city" policies. The law makes it a misdemeanor for officials to vote for such non-cooperation policies after the bill's effective date, with potential fines up to $1,000, jail time up to one year, or loss of office. It also requires local employees to comply with federal immigration requests as an ethics obligation and provides state defense/indemnification for officials cooperating with federal authorities, barring intentional misconduct.