Yes, because I'm one of them.
I have seen a collection of policies and court cases that show that my marriage remains valid, even federally; in fact, the federal policy IS that a trans woman could continue to claim her wife as her legal spouse for benefits purposes. None of this is enshrined in law, so it's not quite as solid as far as proof goes, but the preponderance says that the contract remains valid *as it was signed* - meaning, if it was an opposite-sex couple on the license, subsequent gender change doesn't invalidate it. (The famous Texas case, for example, she married post-op, meaning that there was room to argue [for the jerks in Texas] that she was still "legally male." I married while legally male to a legal female, and that hasn't changed even if we're now two females.) It does make it obviously ridiculous to claim that same-sex marriage will destroy the country, but really, that was clear from the day MA legalized it and the sky didn't fall.
Of course, I live in one state and work in another and both have legal same-sex marriage, so it's moot to me. Incidentally, my home state allowed me to change the gender marker on all my ID with just a doctor's letter; whether I had bottom surgery was irrelevant. (The state where I was BORN requires GRS for the birth certificate, but I only lived there until I was about a year old! So annoying.)
