Ahh, the border fence.
The more I learn about the way things work inside the Department of Homeland Security, the more dismayed I am about our country's future. (Put it this way: that 30 Rock episode a couple of weeks ago wasn't too far off.)
Anyway, if DHS and the rest of the government are so stubborn as to pretend that building a fence on the border (and disrupting the flow of commerce, wildlife, and water access for south Texas ranchers) is really a good long-term solution, let 'em do it. If I were you, I'd start investing in Mexican ladder companies.