No, if it was comprehensible, I wouldnt have asked. As you can see, I am quite competent in my reading and writing skills.
And the govt does not have to prove or claim marriage as a right. It DOES however, if it bases its claims on discrimination, have to accord the same benefits, privileges, penalties even, and legal protections EQUALLY.
Just like a state cannot deny a driver's license based on discriminatory reasons. Driving isnt a right, but the govt may not regulate it using discriminatory policies.