We can complain if they are not solidly based in the principles on which this nation was founded.
Kidnapping a boy from his mother and shipping him off to a Communist dictatorship = not founded on American principles
Saving an innocent, disabled woman from being starved to death by an order of the judiciary = founded in the American principle of the right to life, an inalienable right, put first and foremost among the reasons for revolting from the Crown in the Declaration of Independence.
As we can see from this case, the executive is not the only branch of government which is capable of excesses that put our nation's well-being in mortal danger. Given the Congressional subpoena that is still outstanding, the executive can easily choose to side with the legislative branch, in a Constitutionally intended check on the runaway power of the judiciary.
Good point made by Chad, good response by you.
Sure we can. However, what we lose is the ability to hold them accountable, because if we allow it when we agree, and not hold them accountable because it's "the right thing to do" regardless of the legality, then we have zero recourse when it occurs for something we disagree with...