I think a 100 yard no mans land between the USA and mexico would be great... Burn all the plants, poisen/cover all the water in that area also...
Level it, and station it with snipers with .50 cals every 200 yards.

Cross the border, and death due you part.

We dont need anybody else in America illegally. If your illegal, two choices... Death, or deportation.

What is a job that a mexican will do, that an American cant
~Nate