You know, instead of a wall, maybe we should be thinking of a 700 mile canal instead?
Americans on one side .. Mexicans on the other, ALL making bazillions of dollars an hour in its construction ... guards from both sides .. ON both sides of the locks .. shared revenues from the user ships ...
great idea...except remember what one of the nicknames is for illegals.."wetbacks"....make sure that when you build the wall you have alligators/sharks/pirahanas or lawyers in the water!!!!