this is why this doesn t happen. the white house has been emphatic this isn t a muss bim ban, which is what donald trump campaigned on, stopping muslims from coming into this country. they said it s absolutely not. this is a travel restriction on immigration and immigration from certain areas. this is not based on religion. it s based on certain countries we believe to be a threat. rudy giuliani, one of donald trump s advisers, said over the weekend on fox news that president trump called him and said, you know, i want to do a muslim ban. how can i do it legally? talk to me, ari, what that would mean legally for rudy guiel an when they try to defend this in court? the president has tremendous power over immigration, under constitutional and federal law preceps. barring a great violation, that s hard to stop. what may turn it case is if there is religious discrimination by other means.