Did the Supreme Court extra-legally amend the Constitution?

[Sympthsical]

14. No

That is not how use of English common law in American jurisprudence works.

And the relevant law in that case was actually about an officer of the Exchequer, IIRC. It had to do with how English cabinet functions.

But that is just the long chain of jurisprudence. In the case with Trump, the Roberts court only needed to expand on American precedent that had been established.

My post was only meant to illustrate/explain how things not explicitly in the Constitution end up being a part of American judicial decision making.