With One Filing, Prosecutor Puts Bush in Spotlight

By DAVID E. SANGER and DAVID JOHNSTON

WASHINGTON, April 10 — From the early days of the C.I.A. leak investigation in 2003, the Bush White House has insisted there was no effort to discredit Joseph C. Wilson IV, the man who emerged as the most damaging critic of the administration's case that Saddam Hussein was seeking to build nuclear weapons.

But now White House officials, and specifically President Bush and Vice President Dick Cheney, have been pitched back into the center of the nearly three-year controversy, this time because of a prosecutor's court filing in the case that asserts there was "a strong desire by many, including multiple people in the White House," to undermine Mr. Wilson.

The new assertions by the special prosecutor, Patrick J. Fitzgerald, have put administration officials on the spot in a way they have not been for months, as attention in the leak case seems to be shifting away from the White House to the pretrial procedural skirmishing in the perjury and obstruction charges against Mr. Cheney's former chief of staff, I. Lewis Libby Jr.