Feet on the ground....

Saddam's Spies Survive In America:

"Because these Iraqi agents were operating at such a low, grassroots, level, they rarely appeared on the FBI radar. Saddam's espionage service was efficient enough to set up ways to get information to and from his American spies. This is nothing new. Many other nations, both friendly and hostile, have similar spy networks inside the United States. And many of these low level spies are never caught."