This is precisely why Trump is a clown and unfit for office. He's patently clear he has no idea of the function of courts to review executive actions and put a stop to what many would consider to be illegal directives.  It would appear this man believes he can issue diktats from the Oval Office and everyone is supposed to fall in line, and not a peep is heard from his Republican enablers who crowed wildly about Obama's use of executive orders in order to overcome their own obstruction.
The entire U.S. political system today is rotten to the core and filled with people who have no idea what they're doing, respect for proper procedure or the limits on their own authority.