Mont. Code Ann. § 17-7-305
17-7-305 Supplemental appropriations for legislative agencies
17-7-305 . Supplemental appropriations for legislative agencies. Deficiency appropriations, commonly referred to as a "supplemental appropriation", for a legislative branch agency must be included in a separate appropriation bill and may not be included in the bill appropriating money for the operation of the legislature, commonly referred to as the "feed bill".