“States can issue civil unions and name changes, which are legal documents.”
But they apply to all states so they are not “state” documents. They are essentially federal.
No. Reciprocal state issues do not become federal issues. My California drivers license is accepted by law enforcement in all 50 states. It does not become essentially a “federal” drivers license. It is still a state drivers license. It is just accepted in the true meaning of “federalism” that has basically fallen by the wayside due to the over-reach of the US central government.