He never had the power to build the wall without Congress and Ryan and McConnell don’t want a wall....
he has the power he refuses to exercise. The emergency power. He can tell the courts they have no standing to stop emergency actions. You can;t respond to emergencies if every just can stop the action, jeopardizes the country.
His own delaying for 2 years puts in question how much of an emergency this is. he keeps repeating all the problems and he keeps delaying action. He is contradicting himself.