According to the FBI, Iraqis are being smuggled across the border. The story calls them refugees and many probably are. However it would be easy enough for a terrorist to mix in.
http://blogs.abcnews.com/theblotter/2007/07/fbi-iraqis-bein.html
if they where refugees they wouldn’t have 25,000
Fairly affluent refugees, at $20-25,000 a head, I'd say.