An attitudinal sea change. I think that's the hardest one to fix. Presidential directives, bills, provisions can all be rescinded, repealed, amended, but attitudes linger. The hardest thing is going to be to try to reverse an attitude, a bunker mentality that equates secrecy with either security or heightened efficiency and that regards transparency as an invitation to mischief and trespass. This default position of operating in the shadows is going to be somewhat appealing to whomever inherits office.

The level of trust is extraordinarily low and the level of suspicion extraordinarily high, and with good reason and on both sides. The press has hunkered down for very good reason, because it's being treated like a mushroom.

I love the idea of a shield law; I don't know of any journalist who doesn't love the idea of a shield law. It's all in the details. Some of the shield laws that were floating around sounded good, but when you looked at them, exceptions or exclusions or broadness in the language really invited some problems.

One of the things that will probably need to be addressed is in the treatment of history, i.e. the Presidential Papers Act. If they can act with impunity, if they know that what they're doing is not going to see the light of day anytime in their lifetime, if they have the right to withhold information from the public, then presidents are given a vastly freer hand.

Another factor is the post-9/11 security mentality, which views sunlight as toxic and imagines that somehow bin Laden is dependent upon our government documents, a "fact" that has never, ever been supported to my knowledge. So, that's the second factor.

I don't think the question is if should we have a shield law. I think the question is what kind of shield law we should have. Yes, I'd like to see a federal shield law, but if and only if it provides genuine safeguards and doesn't green-light prosecutors and judges and litigants from going after the press and getting things to which they should not be entitled. It's not a simple kind of litmus test.

It will be important to restore those provisions, those disclose provisions, those release provisions so that presidents are indeed held accountable and their information and papers are made public.