Roger Clemens declined to say whether he was aware Congress had asked the Justice Department to investigate whether he lied in sworn testimony about steroid use. A letter drafted by House Oversight and Government Reform Committee chairman Henry Waxman and ranking Republican Tom Davis was sent to Attorney General Michael Mukasey on Wednesday.

They asked the Justice Department to look into Clemens' recent statements in a sworn deposition and at a public hearing that he "never used anabolic steroids or human growth hormone."

Clemens was working with minor leaguers at the Houston Astros' spring training camp when the congressional request became official.

When he was finished, the seven-time Cy Young Award winner emerged from an indoor batting cage to a large group of autograph-seekers, reporters and photographers. He was asked several times if he was aware of the request and never answered.

"Guys, the big team is up that way," Clemens said, referring to the Astros, whose spring training clubhouse is about 200 yards from the minor league complex.

Later in the afternoon, a clubhouse assistant backed Clemens' black Hummer up to a service entrance to the building, which helped the pitcher keep away from about two dozen reporters and photographers who tracked him all day.

Clemens came out just after 2 p.m. and as he was asked about the congressional request one more time, he responded, "See y'all tomorrow," hopped into the Hummer and drove away.

The congressmen wrote in a letter that Clemens' testimony directly contradicted that of Brian McNamee, his former personal trainer, who said he injected Clemens with anabolic steroids and human growth hormone.