It is my humble opinion that the fact this question is even political is a sign we've gone far off the path of freedom and into a realm of extreme government control. The government isn't the place to define, predict, preserve, promote, or in any way "bless" any type of relationship between free adults who consent to any arrangement. It is flat none of the government's business if we believe that there is any truth at all to the idea that we are the "land of the free".
The government shouldn't be issuing licenses, promoting, defining any consenting relationships at all. If we were "free" they would not, should not, and we should be in arms that the government has stepped into this arena to begin with, instead we spend hours promoting the government step in here and define this, make sure nobody is doing "that", force people to "allow" this...
It's almost sickening how we argue in which direction the government SHOULD interfere in our lives rather than demand the government GTFO of our lives. By attempting to promote a certain "family" situation we have allowed government, businesses, our neighbors, et al to judge and define our actions so that we can obtain a specific "benefit" or "blessing" bestowed by government onto us... We allow them to gather information on even the minutest points of our lives so that we can receive more "blessing" (read: benefit) from our government. It is insane we let them go there and still call ourselves free.