[okie01]

First you build a real fence and then you have a boarder to guard.

Gee, I wonder why Israel has yet to build a fence on the River Jordan...

[org.whodat]

LOL, it is fenced, and part of that fence is heavy machine guns, http://www.greatmirror.com/index.cfm?navid=205&picturesize=medium

[LOC1]

I suggest that everyone read this report:

http://www.texasagriculture.gov/vgn/tda/files/1848/46982_Final%20Report-Texas%20Border%20Security.pdf

It was written by two military experts who have significant experience. The report seems long, but one can get the meat of it on pages 9-15.

Note the recommendations.