Former Major League Baseball player Mark McGwire is sworn in before testifying at a hearing on Capitol Hill on the use of steroids in baseball. Also appearing, from left, the Baltimore Orioles’ Sammy Sosa, his interpreter Patricia Rosell, the Orioles’ Rafael Palmiero and the Boston Red Sox’s Curt Schilling. (Gerald Herbert / AP)
Pennslyvania Rep. Charles W. Dent listens to testimony during House Government Reform Committee hearings into the use of steroids in baseball. (David Hobby / Baltimore Sun)
Major League Baseball Commissioner Bud Selig listens to testimony during a House Government Reform Committee hearing investigating steroid use in baseball. (Mark Wilson / Getty Images)
Former Major League Baseball player Jose Canseco is sworn in during a House Government Reform Committee hearing investigating steroid use in baseball. (Win McNamee / AP)
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House Government Reform Committee member Rep. Diane Watson, D-Calif., holds an issue of “Sports Illustrated” as she questions witnesses during a hearing on Capitol Hill to examine the use of steroids in baseball. (Gerald Herbert / AP)
Major League Baseball medical advisor Dr. Elliot Pellman testifies during a hearing on Capitol Hill on the use of steroids in baseball. (Gerald Herbert / AP)
Baltimore Oriole Sammy Sosa testifies during a House Government Reform Committee hearing into steroid use in baseball. (Mark Wilson / Getty Images)
Dr. Nora Volkow, director of the National Institute on Drug Abuse, testifies at the House Government Reform Committee hearing on the use of steroids in baseball. (Gerald Herbert / AP)
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Baltimore Oriole Rafael Palmeiro addresses a House committee hearing on steroids in baseball. Palmeiro said he never used steroids. (Mark Wilson / Getty Images)
