That's the point. When the injustice system is not upholding the constitution, it is the presidents duty to defend it;  "I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my ability, preserve, protect and defend the Constitution of the United States."  Trump wants the courts to be as corrupt as possible. That way they force him to destroy them.