Each member of the legislature shall receive per diem at the internal revenue service maximum federal per diem rate for the city of Santa Fe for each day's attendance during each session of the legislature and the internal revenue service standard mileage rate for each mile traveled in going to and returning from the seat of government by the usual traveled route, once each session as defined by Article 4, Section 5 of the constitution of New Mexico.
NMS § 2-1-8