In a Dec. 3, 2006, e-mail released Friday night, Scott Jennings, one of presidential adviser Karl Rove's aides, asked Sampson if he had a list of "all vacant, or about-to-be vacant, US Attorney slots." Jennings' request came on a Sunday, so Sampson offered to send it to him the next day.

Jennings, a political operative, had earlier passed along complaints from Republican Party activists about U.S. Attorney David Iglesias, who was fired from his job in New Mexico. Some Republicans were angry that Iglesias hadn't been more aggressive in investigating Democrats.