N.M. Admin. Code § 19.34.7.8
On or after April 1, 2006 no resident or nonresident license or permit shall be considered to be a proper and valid license unless the licensee can demonstrate, by a stamp, check-off or other official mark, that a $4.00 fee for habitat management and access validation has been paid, provided that an individual purchaser shall be required to pay for only one habitat management and access validation fee each license year, regardless of the number of licenses or permits purchased by the licensee. Exceptions: no person under the age of 18, no resident angler age 70 and older and no person designated by the department as a 100% disabled resident veteran is required to purchase the habitat management and access validation.
N.M. Admin. Code § 19.34.7.8