In Congressional testimony in 2004 and 2005, Google executives said they used "trusted" third-party verification services to ensure they weren't accepting ads from illicit drug sellers, and that the company had a dedicated team enforcing its policies for online pharmacy ads.

WSJ: Google Was Warned on Rogue Drug Ads

Gerri Ratliff, chief of the verification division of U.S. Citizenship and Immigration Services, the Department of Homeland Security unit that runs the program, takes strong objection to that.

FORBES: Immigration Shootout At The Local Corral