Here are some links:
http://www.vdare.com/fulford/ricol.htm
http://www.cis.org/articles/2003/back1103.html
http://www.vdare.com/fulford/lawsuit.htm
Tort lawyers love to find/start "cottage industries", e.g. tobacco lawsuits, asbestos lawsuits, etc. If the initial suits are successful, suing employers of illegals could keep them in the chips for decades and put this problem to rest.