Brian McNamee's lawyers said their client today turned over vials, syringes, and gauze from injecting Roger Clemens with performance enhancing drugs in 2000 and 2001. The material has reportedly been given to the FBI for testing. If a DNA sample can be acquired from this, investigators can get a subpoena or warrant for Clemens' DNA.

Clemens offered several hours of testimony to Congressional investigators today. He reportedly denied ever using banned substances.

Lanny Breuer, one of Clemens' lawyers, immediately responded that McNamee "apparently has manufactured evidence" and called all the allegations "desperate smears."

"It is just not credible," Breuer said in a statement. "Who in their right mind does such a thing?"

Monica Lewinsky did, but of course it involved a stained dress and not vials of steroids.

Perjury before Congress, in private or public testimony, is a felony.

McNamee's immunity deal requires him to fully cooperate with investigators and to do so honestly. If he's manufactured evidence or misled any aspect of any investigation to which his deal requires his cooperation, he loses immunity.

The stakes are very high and this is no longer he said-he said. Someone has brazenly committed a felony. Either the "evidence" provided is manufactured or Clemens is lying.

With every passing day, I'm inclined to believe the latter.