Just declassify it

The more we find out about this mysterious PDB memo, the more I want to see it. And this isn't really new news, we have heard about this existence of this memo since 2002. The Bush administration, the same administration that didn't want a 9/11 commission in the first place, continues to try and stonewall the American public. Well, this isn't conspiracy theory anymore. We know the memo exist, we know it's titled "Bin Laden Determined to Strike Inside the United States." If we buy Condi's line of bullshit that this is all "historical" information, then why was it a PDB? Does this mean PDB's aren't that imporant? And if it was all historical info, why not declassify it right away? What do they have to hide?