our senior political analyst, ron brownstein, joining us now from culver city, out in the california. ron, give us an idea of what kind of documents we're talking about, what this potentially could mean if hillary clinton runs for president. >> reporter: hi, wolf. first of all, substantively, i have written books using the presidential libraries and the general trend over time is to longer delay and narrow disclosure. fdr library, lbj library, huge trove material, part of a long standing trend. we don't know what are in the documents. many confidential advice within the white house. i think politically, this really plays into the broader issue, which is that obviously one of the fulcrum points of the hillary clinton campaign in 2016, if there is one, whether she can keep it focused on the future, and whether she is dragged back into fighting polarizing disputes of the '90s. >> and that's going to be a big issue. as you know, by law, the papers can be withheld from the public for about 12 years after a president leaves office. that means the documents could have been released a year ag