The fact that the liberals can claim the same thing (many Bush administration back-dealings and conspiracies left out of the news on PBS) shows how balanced the news programs on PBS really are. I've learned that you're only going to hear about some of these things by listening to right-wing or left-wing radio. Hence, the reason I get my news from...
PBS's News Hour with Jim Lehrer
National Public Radio
Sojourners: A Christian Magazine
www.sojo.net
The Washington Post
Al Franken (books and radio show)
You can't really blame one news outlet. It's up to you to make sure you look at many sources and pick the ones you trust the most.