N.M. Stat. § 30-37-8
In order to provide for the uniform application of this act to all minors within this state, it is intended that the sole and only regulation of the sale, distribution or provision of any matter described in Section 2 [30-37-2 NMSA 1978], or admission to, or exhibition of, any performance described in Section 3 [30-37-3 NMSA 1978], shall be under this act, and no municipality, county or other governmental unit within this state shall make any law, ordinance or regulation relating to the sale, distribution or provision of any matter described in Section 2, or admission to any performance described in Section 3, including but not limited to criminal offenses, classification of suitable matter or performances for minors, or licenses or taxes respecting the sale, distribution, exhibition or provision of matter regulated under this act. All such laws, ordinances, regulations, taxes or licenses, whether enacted before or after this act, shall be or become void, unenforceable and of no effect upon the effective date of this act.
NMS § 30-37-8