While we’re talking about the Stuarts, it is useful to note that Trump’s declaration of bogus emergencies to enhance his powers has an antecedent–Charles I and the ship money case. In fact, it is highly likely that at some point, the Supreme Court will have to decide the same issues that were presented to King’s Bench in the 1630s: what is the legal definition of an emergency; and can a declaration of one be reviewed by the judicial branch?
The precedent suggests dangers for both sides. John Hampden lost the ship money case, but it became one of the grievances against Charles, who ultimately lost his head.