Can a constitutional amendment be unconstitutional?

Talking about the US constitution at the moment, but it's probably general for any constitution that can lawfully be amended.

"Thirty-three amendments to the Constitution of the United States have been proposed by the United States Congress and sent to the states for ratification since the Constitution was put into operation on March 4, 1789. Twenty-seven of those, having been ratified by the requisite number of states, are part of the Constitution. The first ten amendments were adopted and ratified simultaneously and are known collectively as the Bill of Rights. The 13th, 14th, and 15th amendments are collectively known as the Reconstruction Amendments."

The 18th Amendment is the only one to have been repealed (by the 21st Amendment).

The first Amendment
The first Amendment
No. A ratified amendment is part of the constitution.
Yes. (Please tell us how part of the constitution can be unconstitutional.)
Don't know/see results
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Can a constitutional amendment be unconstitutional?
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