What part of illegal doesn’t Rudy Giuliani understand?

According to an Associated Press story Rudy Giuliani has thrown cold water on the widely believed idea that the estimated 12 million illegal immigrants in the United States are criminals and that when cities instruct their employees to not inquire about immigration status they are turning a blind eye to criminal behavior.

"[Illegal immigration is] not a crime," Giuliani said Friday. "I know that's very hard for people to understand, but it's not a federal crime."

How can that be Rudy? What does the illegal in illegal immigrant mean?

"I was U.S. attorney in the Southern district of New York," he said. "So believe me, I know this. In fact, when you throw an immigrant out of the country, it's not a criminal proceeding. It's a civil proceeding."

Oh.