With all due respect to the offices of Attorney General of the United States and President of the United States;
Mr. Holder, President Obama, the two of you are a disgrace to this country, and anything short of impeachment and a criminal trial is too good for you.
Executive privilege has been asserted by the Obama administration in response to multiple subpoenas from the Congressional Oversight Committee regarding documents from the program known as Fast and Furious. In case the reader has not been following this story, it is the operation run by the Department of Justice through the ATF that involved selling guns to known straw purchasers (illegal gun buyers) who would then sell or otherwise provide these weapons to the Mexican drug cartels. Another brief summary of the particulars of the operation can be found in this post by Dedicated Tenther. As a bonus, that link contains DT's thoughts on what should happen to those responsible.