CBS Can't Vouch For Authenticity

CBS concedes it can't vouch for Bush guard document authenticity

It's an embarrassing admission for CBS on a big story. The network admits it can't be sure that documents that were used to question President Bush's Vietnam-era National Guard service are the real thing. CBS says it was wrong to air a story on "60 Minutes" that it couldn't substantiate.

Several experts had said the documents purportedly written by one of Bush's squadron commanders were fakes. But CBS strongly defended the documents -- and didn't admit the papers might be questionable under the commander's former secretary said she believed they were fakes.

CBS says a retired Texas National Guard official has acknowledged providing the documents -- and that he admitted to Dan Rather this weekend that he deliberately misled a network producer about the papers' origin, to protect a source.