New mexico constitution
Article VIII: taxation and revenue
Section 15

The legislature shall exempt from taxation the property, including the community or joint property of husband and wife, of every veteran of the armed forces of the United States who has been determined pursuant to federal law to have a one hundred percent permanent and total service-connected disability, if the veteran occupies the property as his principal place of residence. The legislature shall also provide this exemption from taxation for property owned by the widow or widower of a veteran who was eligible for the exemption provided in this section, if the widow or widower continues to occupy the property as his principal place of residence. The burden of proving eligibility for the exemption in this section is on the person claiming the exemption.