@ Monteria Cook
Be sure to understand the "Fair Housing" law. In some cases, if you own three or fewer SFH units you might be exempt. Get familiar with the law first.
There are seven "Federal" protected classes for discrimination: race, color, religion, national origin, sex, disability, and familial status. Your state may have protected classes "In addition to" the federal protected classes. For instance, in Maryland we have 3 more, (one becomes effective starting 10/1/14). Then there are local/county protected classes for a total of 12 more. In total, Maryland Landlords could have up to 22 protected classes they have to know about.
Research your state. Google "Fair Housing Protected Classes New Mexico." Go to the source for the facts, either the state website itself or a reputable source, such as the state association of realtors.
Err on the side of caution - it only takes an accusation to bring a case against you. Your then left with different individual interpretation of the law and a legal process to deal with.