I actually think Congress is the one who controls the reins still with this one. All they have to do is simply say “no“ and stop falling in line with the party because their president is in charge. They won’t do it, but they need to just agree enough is enough and legislate instead of handing it off to the president so they can’t be held accountable for their votes. Still, at the end of the day the ball is in their court.
In suggest: The can of worms was opened.
(i.e. subsequent us presidents, no matter which party, will use more freedom of movement in the office)