So, can Congress Impeach him, or will higher courts just have to keep reversing his rulings and diktats?

Many judges on the bench were put there with the assent of the same group of Republicans who discovered that Trump was going to kick over their rice bowls (e.g., Bulwark et al.; National Review Never Trump edition 2016).

I completely agree that complicity is a major factor with some GOP Senate pushovers. They want the courts to tie down conservative and nationalist and traditionalist moves. It predates Trump, though. This same tendency was visible all the way back to Reagan.

That way they can tell their constituents: “We really tried, but the courts just won’t let us! But we can still pass a free trade bill!”

Others I think honestly just don’t get the issue. This group was recruited to run by business groups, is motivated by business issues, and are barely aware of the other considerations.

This is the kind of Senator (or Congressman) who asks, sincerely, “What does any of that have to do with tax cuts and labor costs?”

(Indefatigable champion of the “Trump delenda est” crowd…and Transformational Political Grammar.)

You could add a third choice – complicity.

Many judges on the bench were put there with the assent of the same group of Republicans who discovered that Trump was going to kick over their rice bowls
(e.g., Bulwark et al.; National Review Never Trump edition 2016).

That includes some of the still-sitting Congress critters who can’t seem to get up any enthusiasm for encoding the reforms supported by their constituents.

So long as we can predict a court decision by looking at who appointed the judges, we don’t have rule by law.

Why these knuckleheads fancy that their collegiality will be reciprocated is beyond my meager comprehension capacity.

(And their lack of reciprocity will take place at the most critical legislative junctures.)