Major League Baseball commissioner Bud Selig, left, Robert Manfred Jr., center , executive vice president of Labor and Human Resources for Major League Baseball, and Donald Fehr, executive director of the baseball players association, are sworn, March 17, 2005, during a hearing before the House Committee on Government Reform on Capitol Hill in Washington. They were there to discuss the use of steroids in professional baseball.
Retired slugger Mark McGwire, left, the Baltimore Orioles' Rafael Palmiero, center, and Boston Red Sox Curt Schilling leave the witness table during a break in a hearing on Capitol Hill examining the use of steroids in baseball, in Washington, March 17, 2005.
Former baseball player Mark McGwire testifies at a hearing on Capitol Hill in Washington, March 17, 2005, on the use of steroids in professional baseball.
Former Oakland Athletic and St. Louis Cardinal baseball player Mark McGwire is sworn in before testifying at a hearing on Capitol Hill on the use of steroids in professional baseball March 17, 2005. From left, Baltimore Orioles' Sammy Sosa, his interpreter Patricia Rosell, McGwire, Orioles' Rafael Palmiero and Boston Red Sox Curt Schilling.
The Baltimore Orioles' Sammy Sosa testifies during a hearing on Capitol Hill examining the use of steroids in baseball, in Washington, March 17, 2005.
The Baltimore Orioles' Rafael Palmiero testifies during a hearing on Capitol Hill examining the use of steroids in baseball, in Washington, March 17, 2005.
Former Major League Baseball star Jose Canseco testifies during a hearing on Capitol Hill examining the use of steroids in baseball, in Washington, March 17, 2005.
House Government Reform Committee Chairman Rep. Tom Davis III, R-Va., right, adminsters the oath to Baltimore Oriole Sammy Sosa on Capitol Hill, March 17, 2005 during the committee's hearing on the use of steroids in professional baseball.
Curt Schilling of the Boston Red Sox listens to testimony during a hearing on Capitol Hill examining the use of steroids in baseball, in Washington, March 17, 2005.
Former Major League Baseball player Jose Canseco is sworn in during a House Committee hearing investigating steroid use in baseball on Capital Hill, March 17, 2005, in Washington.
Major League Baseball Commissioner Bud Selig listens to testimony during a hearing on Capitol Hill to examine the use of steroids in baseball Thursday, March 17, 2005.
Major League Baseball commissioner Bud Selig, left, and MLB President Bob Dupay watch testimony Thursday, March 17, 2005, during a hearing on Capitol Hill in Washington.
Major League Baseball Hall of Famer Sen. Jim Bunning, R-Ky., listens to Sen. Chris Shays, R-Conn., (left) at the start of a hearing on Capitol Hill to examine the use of steroids in baseball March 17, 2005.
Major League Baseball Commissioner Bud Selig watches testimony Thursday, March 17, 2005, during a hearing on Capitol Hill in Washington on the use of steroids in professional baseball.
Major League Baseball Hall of Famer Sen. Jim Bunning, R-Ky., testifies during a hearing on Capitol Hill in Washington March 17, 2005, to examine the use of steroids in baseball.
Major League Baseball Commissioner Bud Selig, left, listens to the testimony of U.S. Sen. Jim Bunning during a hearing on steroid use in baseball March 17, 2005, in Washington, DC. At right is MLB President Bob Dupay.
Dr. Donald Hooton Sr., founder, president and director of the Taylor Hooton Foundation, testifies during a hearing on Capitol Hill to examine the use of steroids in baseball.
Dr. Nora Volkow, director of the National Institute on Drug Abuse, testifies March 17, 2005, during a hearing on Capitol Hill in Washington on the use of steroids in professional baseball.
Major League Baseball Commissioner Bud Selig, left, listens to Raymond Garibaldi testify during a hearing on Capitol Hill in Washington March 17, 2005, on the use of steroids in professional baseball.
Witnesses are sworn in during a hearing on Capitol Hill, March 17, 2005. From left, Ray and Dr. Denise Garibaldi and Donald Hooton Sr., whose sons died from steroid use; National Institute on Drug Abuse Director Dr. Nora Volkow; Dr. Gary Wadler; University of Michigan Medical School psychiatry professor Dr. Kirk Brower; and MBL Medical Advisor Dr. Elliot Pellman.