N.H. Rev. Stat. Ann. § 228-A:12
The state pledges to and agrees with the holders of bonds issued under this chapter that until such bonds, together with interest thereon, with interest on any unpaid installment of interest and all costs and expenses in connection with any action or proceedings by or on behalf of such holders, are fully met and discharged, or unless expressly permitted or otherwise authorized by the terms of each contract and agreement made or entered into by or on behalf of the state with or for the benefit of such holders, the state shall:
II. Not issue any bonds, notes, or other evidences of indebtedness, other than federal highway grant anticipation bonds, having any rights secured by any pledge of or other lien or charge on the revenues or any moneys or securities paid or to be paid to or held or to be held by the state or the treasurer hereunder, and shall not create or cause to be created any lien or charge on the revenues, any such moneys or securities, other than a lien and pledge thereon created by or pursuant to the provisions of this chapter; provided that nothing in this section shall prevent the state from issuing evidences of indebtedness which:
Source. 2005, 58:1, eff. July 1, 2005.