[JohnKinAK]

Congress can’t just change a law. Read your Constitution.

[DTxAg]

Congress can’t just change a law.

Agreed, but Congress can change its own internal rules regarding what requires a super-majority vote without any external interference. And if the 2/3 majority rule is a law, Congress can pass a law repealing the 2/3 majority requirement by a simple majority in both houses of Congress and a Dem president. The 2/3 majority for tax increases thing is good PR, though.