I'm surprised all of these ppl stayed in the US. I would imagine it's a lot harder to track someone down if they disappeared to the other side of the world.
If the problem is money however, then that's a valid issue. Because all of the above cost significant amounts of money.
Pick the right country and that's not a problem at all; a couple of strategic bribes can get you out of trouble in most of the world.
Also, U.S. Mexico border is not that hard. Tons of people and drugs do it daily.