N.J. Stat. Ann. § 9:7-4

The provisions of sections 9:7-1 to 9:7-3 of this chapter shall not apply to a natural parent, parent by adoption, brother, sister, aunt, uncle, grandparent or stepparent bringing or receiving a child into this State for the purpose of placement in his or her own home, when such relative is a person responsible under the laws of this State for the support and maintenance of such child, or when, prior to the placement of the child in the home of such relative, such placement has been approved by the Commissioner of Institutions and Agencies; provided, however, that the immunity granted by this section shall not pass to any other person who may later receive such child for placement in his or her home.