Given that, they've operated on a consensus model for so long, it's hard to say that the current admin is doing something illegal by changing (as long as the money is spent by end of fiscal year, due to impoundment laws). This may be a "constitutional crisis" in the parliamentary sense, but hardly in the American sense.

>virtually everyone on both sides has agreed

This is something I've talked about elsewhere, but the electorate that put Trump in office did it specifically in rejection of the Dem & GOP cooperation of the last several decades which led to the same things happening regardless of who was in charge.

From that perspective (and without saying anything about legality or wisdom, etc) Trump is doing exactly what the people who put him in office asked him to do.