Sidney Blumenthal, in Follow the e-mails | Salon.com writes about the secret trove of White House e-mails that were routed through Republican Party servers in an attempt to avoid Congress ever forcing disclosure of illegal activities by government officials.
The first glimmer of this dodge appeared in a small item buried in a January 2004 issue of U.S. News & World Report: “‘I don’t want my E-mail made public,’ said one insider. As a result, many aides have shifted to Internet E-mail instead of the White House system. ‘It’s Yahoo!, baby,’ says a Bushie.”
This use of outside e-mail accounts to conduct government business is probably not legal.
When I worked in the Clinton White House, people brought in their personal computers if they were engaged in any campaign work, but all official transactions had to be done within the White House system as stipulated by the Presidential Records Act of 1978. (The PRA requires that “the President shall take all such steps as may be necessary to assure that the activities, deliberations, decisions, and policies that reflect the performance of his constitutional, statutory, or other official or ceremonial duties are adequately documented and that such records are maintained as Presidential records.”) Having forsaken the use of Executive Office of the President e-mail, executive privilege has been sacrificed. Moreover, Rove’s and the others’ practice may not be legal.