[mylife]

I guess I missed that idea.
Can you explain?

[Roccus]

You get (x)number of Mexicans.
You call them “Sheriffs”.
You assign each of them a section of the border on the Mexican side.
You deposit $1,000,000 in an account for each of them.
For every border crosser we catch, we withdraw $10,000 from the account of the Sheriff responsible for that section of the border.
The Sheriffs collect what's left in the account at the end of six months.
Repeat.