Let's say the wall is built and is definitely keeping Mexicans from getting into the country, OK, no more illegals from Mexico, fine. Now, how do we build a wall in the Atlantic Ocean or in the sky to keep the illegals from Honduras, El Salvador, Guatemala, Haiti and so many other places from coming from the U.S.? His followers are always ready to shout "build that wall", but that's just taking care of one country. How do you keep everyody else out, "build that wall in the sky"? . . . "build that wall in the Atlantic Ocean!" . . .? ?