What, you don't want Bill Clinton's signature of approval on your marriage?
Geeze, folks there is no state marriage per se. It is a recording of the marriage because the all volunteer system was woooofully inadequate when it came to inheritance and legitimacy.
As long as you are a notary you can sing the ompaloompa song, sign the papers and marry the man and woman. You don't even need the song.
Marriage is about children and the continuation of society. Society, and our Republic, rewards the insitution. It is not there to reward an individual in that institution.
Marriage to a US citizen can also confer citizenship, you do not want that to removed to some wacko open borders church.