Conservative (small "c" conservative, that is)estimates are there are 11 million ecomnomic terrorists from mexico. If only 1% were alquaeda, that would still be more than we killed in Iraq. Nobody knows, because the flow is obviously free if 11 million can pour through. Damn, I can heardly sneak in a couple cases of real Labatts Blue, these guys sneak in their whole families!
How do you know they're sneaking in if nobody (including you) is looking?