[protomyth]

If you read the amendment process, the states can get together and amend the constitution if pushed too hard by the Feds. It hasn't been done, but it is a valid avenue.

[eximius]

Which could, theoretically, be revoked quicker than the States could finish. Hence Godel's initial issue.

[protomyth]

The same state legislators that vote on the amendments would have to cut their own throat (not likely).