Even within the framework of SovCit, I do not understand how they expect to get a U.S. government issued passport while declaring themselves non-citizens. Honestly, if I put on my SovCit thinking fez, I could spin the denial of it by the government as a positive. “See the U.S. government didn’t issue me a passport which proves I’m not a citizen!”
This post isn’t even doing the “I’m an American national and not a state citizen” thing, which would at least track with trying to get a Federally issued passport.
Furthermore why would somebody who is declaring themselves a non-citizen even want a U.S. passport. It’s not like citizens of countries have to get documents from all the countries they aren’t citizens of to prove it.
And of course it’s for something scummy like running away from child support payment, which really shows the caliber of person involved.