Here's one thing the Department of Homeland Security can expect when Democrats take control of the Congress this January: Questions, and lots of 'em, from Rep. Bennie Thompson, the Mississippi Democrat taking the reins of the House Homeland Security Committee. At one point this year, Thompson had 100 requests for info pending at DHS. "It just seems like the guy's never satisfied," says an agency insider. Thompson shrugs. "I like that," he tells us. "It makes me feel like we're having an impact." Why so many letters? "If the department was proactive in communicating with us," he sniffs, "we probably wouldn't need to write so many."