It would seem to me that as many of them as there are they could all get together go back to their countries and take them over and get rid of the corruption they are running from.
Why go somewhere where they are not really wanted and make life even harder for themselves than if they would have stayed home. I can understand a handful that may fear for their life if they remain in their respective country but there are enough to take their own country back.
That's really simple minded. How can unarmed peasants fight an armed government? lol
Jesus Christ there are thousands of unarmed peasants probably 10 to 1 over their armed government, if they can figure out how to get all the way from down there to our border they should be able to figure out how to overthrow their governments. Yes, some will have to be sacrificed to save thousands.
Or you can just let them all cross the border and take a few in yourself.