WASHINGTON — Attorneys for former baseball player Roger Clemens are questioning the legitimacy of the congressional investigation into whether he used steroids — an investigation that led to his criminal trial.

Jurors have begun hearing evidence in the case, with testimony from two House officials set to continue Thursday. The officials have been explaining the function of Congress and the committee that Clemens testified before three years ago. He denied he ever used performance-enhancing drugs.

Clemens has been charged with lying in making those denials under oath. His attorney, Rusty Hardin, is questioning whether the hearing into allegations of drug use by Clemens exceeded Congress' authority. Prosecutors are arguing that Congress had a legitimate interest in regulating steroids in baseball because it relates to U.S. drug policy.

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