Chris Wallace interviewed Rudy Giuliani earlier today, and got asked questions about his decision to put New York's emergency response center in the World Trade Center and other topics, including his immigration stance. Regarding the sanctuary policies he took the feds to court for, he says the standard thing: he wanted the INS to do their job but since they didn't he had to do something. Be that as it may, let's fast forward to his current "thinking":

...we need a tamper-proof I.D. card.

We need to know who's in the United States. We need to know everyone who's in the United States that comes in here from a foreign country. And we have to separate the ones who are dangerous from the ones who aren't.

To accomplish that, we need a fence. We need a technological fence. We need a border patrol. We need people to come forward who are working so they'll get identified, get fingerprinted, get photographed.

And then we should focus our attention on the people who don't come forward. And there's where you're going to find the drug dealers. There's where you're going to find...

A very good question Wallace could have asked is exactly how Rudy Juliani intends to focus on those who don't "come forward". How exactly is he going to find them? Unlike other foreigners, by definition they won't have a "tamper-proof I.D. card", but will most likely have a fake SSN or similar. Oops! In order to "focus" on that category of people, you're going to have to strengthen SSNs in some way... oh what could that be... why, how about requiring everyone to have a "tamper-proof I.D. card"? Wouldn't that work? Wouldn't you feel all warm and safe knowing that President Giuliani has everyone's name and retinal scans on file? I know I would!