Obstruction of Justice

On Sandy Berger's crimes, Lori Byrd at Polipunidt points out:

One thing I have not discussed in detail, and have not seen discussed much elsewhere, is that the offense goes beyond the theft of the documents, but includes the act of obstructing the investigation of the 9/11 Commission.

And from a post she wrote last summer:

If the former National Security Advisor has such disregard for the integrity of documents and the rules and laws pertaining to their treatment, what can be said for his regard for the security of the nation and the safety those rules applying to classified documents protects? And what can be said about that former NSA’s boss who regards the entire matter as a joke? I think we can rightly conclude that for many in that administration, that is exactly what national security was – a joke.