Democrats ask White House for documents on conservative blogger BY ELANA SCHOR Knight Ridder Newspapers WASHINGTON - (KRT) - U.S. Rep. Bennie Thompson, D-Miss., the House's top Democrat for homeland security, has found an unlikely place in need of his protection: the White House press room. Thompson and four colleagues, all senior congressional Democrats, have petitioned Bush administration officials to release classified documents about James D. Guckert, a conservative activist who was a daily fixture at White House press briefings. Calling himself Jeff Gannon, Guckert asked President Bush questions at televised news conferences as a representative of Talon News Service,...