The only way to repeal an amendment to the U. S. Constitution is with another duly ratified amendment.
On behalf of
If a law if proposed it then has to be voted on. When the law is passed it is ratified.
approved
"Duly constituted" typically refers to something that has been properly established or arranged according to the appropriate laws or regulations. For example, a "duly constituted committee" would be one that has been officially formed and approved according to the organization's rules.
Duly is an adverb.
She duly signed the contract before the deadline.
You need a license which is duly authorised. Duly meaning as appropriate or in the correct way or fashion.
it means approved
Your point is duly noted.
The documents were duly signed and submitted to the appropriate department.
"Duly" is an adverb that means "in a proper time" or "in a proper manner." When combined with the word "nominated," it can mean either proper time or proper manner or both. It really depends on the context.