I am going to start today by admitting two things. I am in favor of equal marriage rights for all citizens, regardless of their sexual preference. I do not know all the ins and outs of the Constitution.
I may not be able to tell you word for word what is in Article IV (admission of new states and changing of states), but I do know that the document that some want to trample on and others love to embrace as if it were the Holy Grail guarantees everyone certain rights of equal protection.
Nowhere in the Constitution does it say you get those rights ONLY if you are a heterosexual adult. And, during the Civil Rights movement, nowhere did it say you got those rights ONLY if you were a white adult. While I am not in favor of government having any sort of residency inside my house, especially, my bedroom, someone needs to tell the U.S. Supreme Court to get with the times and grant equal marriage rights to every person in this country regardless of sexual preference.