Arkansas, Indiana, Kansas, Louisiana, Nebraska, Oklahoma, Washington, West Virginia, and Wyoming

….states where you can marry your first cousin, but not your gay partner.

CORRECTION: As John Thacker points out in the comments, I didn't read the linked map correctly. Thes states in the headline don't allow gay marriage or first cousin marriage. Instead, they recognize marriages of first cousins performed in other states, but not the marriages of homosexuals performed in other states. The list of states where you can marry your first cousin but not your gay partner is actually even longer. It includes all of the states in bright red at the linked map except for Vermont, Massachusetts, New Hampshire, and Connecticut.