N.J. Stat. Ann. § 45:7-73.1

43. The board may, in its discretion, enter into an agreement with the corresponding licensing authority of any other State to permit a person duly registered and licensed as a practitioner of mortuary science or as a practitioner of mortuary and embalming science in either State to enter into the other State for the purpose of removing, transporting and burying dead human bodies and directing funerals in the same manner as if he were registered under the laws of such other State, except that such person shall not maintain an establishment, advertise or hold himself out, directly or through any agent or agency or otherwise, as a practitioner of mortuary science or a practitioner of mortuary and embalming science other than in the State in which he is registered and licensed.