So does CBS have a liberal media bias?
Consider these facts and decide for yourself:
For their story impugning the President's military service CBS relied on what turned out to be forged documents claiming to be personal memos of his commanding officer. During their investigation, they talked to the deceased officer's wife and his son. Both of them said that their story was false. CBS chose not to include their opinions because they were considered "biased" sources because they were "pro-Bush".
So CBS refused to believe the word of the family of the officer who allegedly wrote these memos because they were "biased".
Yet the main two sources they relied on for their story is John Kerry's co-chairman, Ben Barnes as one source and the other source has turned out to be one Mr. Burkett, a man who has serious credibility issues in the past and has made all kinds of various unsubstantiated claims against the President.
So the wife and son of the alleged author of these memos were "too biased" to take their concerns on the story seriously but two Democratic operatives are not too biased to use?
You be the judge.