The Donald sez:

“We will build a great wall along the southern border. They get bad education, they have no money, the jobs are a disaster, most of them don't have jobs. We have a plan that I think is going to be fantastic. It's going to be released fairly soon. I think it's going to be something special. I think you're going to like what you hear. I think that would qualify as not smart, but genius... and a very stable genius at that! I like people who weren’t captured.”