Congress shall make no law respecting and establishment of religion. . .
Marriage is an establishment of religion.
But I agree with you. Government should get out of the marriage business. Probably my crappy writing that led you astray.
I think we agree but I could not tell completely.
This would also mean that the government cannot rewrite the definition.
This is an establishment of religion, It means what religion says it means.
Non religious may face some sort of paradox here but they should construct their own group sense of partnering.