You can learn a lot of what you need to know about the Bush administration by reading this AP headline:
That that's even news is a modern civics education in and of itself. That the headline doesn't include the words "timid" and "finally" offers a side lesson in media criticism. And then, within the article, you get this:
Bush has been taking questions from audience members in recent speeches, and the White House says none has been prescreened. The sessions are not open to the public, but instead limited to invited groups.
It's like the insurance companies that require in-person enrollment and are located on the eleventh floor of buildings with a broken elevator. They're not quite "screening" anyone (and screening is such an ugly word, don't you think?), they just prove attractive to a certain, limited set of people. Sort of like the limited, specially-invited, but emphatically not-screened folks who get a golden ticket to the presidential press conferences.