I would imagine this is going to be struck down by a court not because he doesn't have the power to do this, but because he'll have failed to adhere to a fair p

I would imagine this is going to be struck down by a court not because he doesn't have the power to do this, but because he'll have failed to adhere to a fair process in coming up with this - the same reason that his DACA decision was over-turned by the supreme court.