The fact that there’s a specific law called the Impoundment Control Act where the specific actions Trump is trying were made illegal should give you a hint to which way the court cases are going to go..
Why are you confident the Supreme Court will not declare the Impoundment Control Act an unconstitutional restriction of executive power? Or declare the only recourse is impeachment? Who do you expect would enforce the ruling you predicted?
That is surely the elephant in the room.. every time it’s been litigated before the court in the past, the Act has been found constitutional but who knows with this specific set of justices and their obsequiousness to Trump and his executive branch.
https://en.m.wikipedia.org/wiki/Congressional_Budget_and_Imp...