Union head Donald Fehr made "no apologies" for the way they represented players.

"Many players are named. Their reputations have been adversely affected, probably forever," he said. "Even if it turns out down the road that they should not have been."

About two hours after the report was released, two congressmen at the forefront of Capitol Hill's involvement in the steroids issue asked Mitchell, Selig and Fehr to testify at a House committee hearing next Tuesday.

California Democrat Henry Waxman and Virginia Republican Tom Davis — the leaders of the panel that held the March 17, 2005, hearing at which McGwire, Palmeiro and Sammy Sosa testified — want to know "whether the Mitchell Report's recommendations will be adopted and whether additional measures are needed," they said.

Also, a Congressional subcommittee will hold a hearing on Jan. 23 relating to steroid use in professional sports.

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AP sports writers Rachel Cohen and Bill Konigsberg and AP sports writer Howard Fendrich in Washington contributed to this report.