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Harvard Law professor Alan Dershowitz sounded off on claims the 25th Amendment should be used to remove President Trump over his mental capacity.

Dershowitz, a Democrat who supported Hillary Clinton, said calls for removal are "very dangerous."

"There’s only one thing worse than trying to criminalize political differences and that’s trying to psychiatrize them," he said. "These psychiatrists who are trying to diagnose without having even met the man. That’s what they did in Russia."

Yale University psychiatrist Dr. Brandy X. Lee told the "Washington Examiner" that several Democratic senators and one Republican senator met with her after she published analysis questioning Trump's mental health.

However, Lee's statements have been found to violate the "Goldwater Rule" -- an ethical standard set forth by the American Psychiatric Association regarding evaluating politicians or people they have not met.

"How dare liberals... try to undo democracy by accusing a president of being mentally ill without any basis?" Dershowitz asked of those citing Lee and others.

Dershowitz said the 25th Amendment -- ratified in 1967 and delineating presidential succession -- does not apply in this case.

He said former President Ronald Reagan appeared to be developing Alzheimer’s near the end of his term so a case could have been made for him, but reminded viewers that Vice President George Bush would have had to invoke the amendment.

Dershowitz said in Trump's case, that duty would fall to Mike Pence and then require a two-thirds vote of both houses of Congress to remove him.

Watch more above.

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