N.H. Rev. Stat. Ann. § 405:57

It shall be the duty of the insurance commissioner, upon receiving information that, by the laws of any other state, agents, brokers or companies, residents of this state, are prohibited from receiving commissions on policies written for them by agents or companies of that state, to notify agents and companies doing business in this state of the existence of such a law and to enforce the same restrictions and penalties as prescribed by the laws of that state.