A Constitutional Amendment would permanently transfer the right to define marriage to the Congress A.K.A. The Federal Government, and take it from each individual State.
A Constitutional Amendment would permanently transfer the right to define marriage to the Congress A.K.A. The Federal Government, and take it from each individual State. You're arguing both sides of this issue.
Are you saying an amendment is permanent? Or that it could be overturned later? The two are not logically compatible.
There is nothing "permanent" about a Constitutional amendment that a future Constitutional amendment can't reverse. It simply has a higher bar for approval.