Wrong. He was on record as supporting national ID card for ALL people, long before he declared that he was running for president. I've posted the quotes on FR before. I'll dig them up after the debate ends.
Don’t bother.
On balancing the need for increased national security versus a free society, Giuliani said American inventiveness would prevail. "You can't lock everybody down and create curfews and make people wait three hours every time they travel," Giuliani said. But Giuliani said it may be time for a national identification system. "We are going to have to give up a little more of our privacy than we're used to," said Giuliani, who was term-limited last fall.[Source: "Giuliani Reassures UCD Students ; Americans Have To `Relax,' Despite Sept. 11..." Rocky Mountain News. Denver, Colo.: May 15, 2002. pg. 4.A ]While Giuliani shrugged off speculation that he may head the new Cabinet-level Department of Homeland Security, proposed earlier this month by President Bush, he said he supports security measures such as issuing national identification cards. "There's a trade-off that we have to make about what we perceive of as our privacy and protection of everyone else in society," he said. "That is not in any way an erosion of any kind of fundamental freedoms."
[Source: "Giuliani touts technology's role in aiding preparedness" Stephen Krupin. The Atlanta Journal - Constitution. Atlanta, Ga.: Jun 27, 2002. pg. B.2 ]