Understood, the courts must judge on applying and confirming ruling law. Not at all understood however is the crisis in AZ that the feds not only allow, but seemingly encourage, to create a dangerous, unenforced and very calculable disaster which the good citizens there seem doomed to bear. As goes AZ so goes the whole Southern border. Since when is not defending a sovereign state or nation's border good for the country? Can anyone tell me at all what good has come of not doing so? Depressed wages, lack of work for Americans, drugs and nefarious types running about with almost total immunity...I call that invasion. We help other nations fight wars for such, but not our own?