New York ? After telling Congress last year that he wanted to help rid the world of steroids, Mark McGwire is refusing to cooperate with baseball’s Mitchell investigation.

According to a source familiar with the investigation into baseball’s steroid past, McGwire has refused to meet with former Sen. George Mitchell and his team of investigators.

“They’re getting no cooperation from McGwire,” the source told the New York Daily News on Friday. “He wants nothing to do with this. He doesn’t want to talk to them. He doesn’t want his people to talk to them.”