The United States Constitution is not "only a framework".
As further examples of my point, beyond the laws, legal precedents, customs, and institutions mentioned above: None of the executive branch departments (State, Justice, Defense, Treasury, etc.) are mentioned in the Constitution. No federal court besides the Supreme Court is mentioned. Even specific laws are only loosely defined; for freedom of speech, no provision is made for slander, fraud, harassment, government secrets, etc.; for the right to bear arms, nothing defines what 'arms' are (and I don't suggest we try to define them here). The filibuster and other Congressional rules are not defined. Etc.
Let's reiterate:
> Here's what it says in the Constitution:
> "The Congress shall have Power To lay and collect Taxes, Duties, Imposts and Excises"
> Crystal clear.
Anything that is not explicitly defined in the Constitution is certainly left up to the interpretation and decisions (within their constitutional authorizations) of the three branches of government.
However, anything that is explicit in the constitution cannot be overturned without a constitutional amendment.
Hopefully that clears things up for you.
Based on experience in Internet forums, I believe we either need to be in a 'curious state' or the conversation isn't worthwhile - in fact, it's a negative - and I think when someone says 'Exactly Zero' of my comment has value, they aren't curious.
dang describes a 'curious state' very well:
https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
Among that body of law are existing tax rates, which are currently over 15% for corporations. Under the Constitution, the President must agree to changes in tax rates unless their veto is overridden.
You're right that Congress theoretically could violate the agreement, but in practice, it's almost irrelevant. They could theoretically pass a bill tomorrow that eliminates every tax and every law in the U.S.