These vermin, for the most part, are non-Iraqi. For the most part they are coming in via Syria.
The U.S. must deliver an ultimatum to Syria, and, if they fail, create a bombed out no-man's land along the Syrian side of the Iraqi-Syrian boder - anything that moves there is dead.
I'm pretty sure that has been delivered already, and Syria is protesting vocally that it is innocent. But Assad the younger is probably got a pretty good pucker factor these days.
There was an op ed in yesterday's WSJ (yes, it publishes on Saturday now) by one Melik Kaylan, who is identified only as writing a book on "the recent democratic revolutions for ReganBooks). He suggests that the Iraqi borders should be mined. The location of the mines could easily be recorded for later removal, and the mined area could be clearly posted to prevent innocents getting hurt accidentally. Sounded good to me.
When we invaded Iraq, was there a plan to block the Syrian border or did we assume somehow that Syria would do it for us?