BLITZER: Interpol is scolding the international community and the aviation industry for not closing what it sees as a big hole in security. Our homeland security correspondent, Jeanne Meserve, is here with the details -- Jeanne.</s>JEANNE MESERVE, CNN HOMELAND SECURITY CORRESPONDENT: And Wolf, this could surprise some people. Ten years after 9/11, only half of international travelers are having their documents checked against databases to determine if they are stolen or fraudulent. Ronald Noble, the head of the international law enforcement agency Interpol, calls it a "glaring security gap" and a matter of serious concern because terrorists and criminals use stolen and fake passports to conceal their true identity and travel freely from country to country. Interpol estimates there are 28 million stolen passports and national identity cards in circulation, but last year only 40,000 airline passengers were caught using them. According to Noble, that's because the vast majority of countries are not running passports against the Interpol database which includes records of lost and stolen documents from around the world. He estimates that one out of every two air travelers crosses borders without having their documents checked. Noble says governments and airlines should step up at and address the problem, but most of them haven't done so yet -- Wolf.</s>BLITZER: Is the U.S. making these checks?</s>MESERVE: Well, in fact, they are. Customs and Border Protection does check documents of travelers arriving by air through the Advanced Passenger Information System, or APIS. APIS is what it's called for short. Passengers have to provide their travel data including passport numbers before boarding, and it is checked against the Interpol database before their plane takes off for the U.S. The system at land borders, not so tight. A DHS official says only if someone is referred for a secondary inspection can officials check if a passport is lost or stolen -- Wolf.</s>BLITZER: It's a serious issue. All right, Jeanne. Thank you very much. We're getting new reaction from Anthony Weiner's home district about the scandal surrounding him. Stand by for that. And the Libyan capital takes a fierce new pounding. Is NATO doing enough to help the rebels hold on?
Interpol Warns of 'Glaring Security Gap'