"The constitutional amendment we're debating today strikes me as antithetical in every way to the core philosophy of Republicans," McCain said. "It usurps from the states a fundamental authority they have always possessed and imposes a federal remedy for a problem that most states do not believe confronts them."

McCain also said the amendment "will not be adopted by Congress this year, nor next year, nor any time soon until a substantial majority of Americans are persuaded that such a consequential action is as vitally important and necessary as the proponents feel it is today."

"The Founders wisely made certain that the Constitution is difficult to amend and, as a practical political matter, can't be done without overwhelming public approval. And thank God for that," he said.