re: Federal judges can be impeached/removed for "abuse of power"

As recently as the U.S. v. Arizona, the courts (including the 9th circuit and SCOTUS)
have conferred broad authority upon the federal government in executing immigration policy.

A sudden and sharp reversal of this stance now obviously smacks of politics and not consistent legal reasoning.

I would think that even you can see it, but I might be giving you too much credit.