Congress expanded the scope of its ongoing probe into steroid use in sports, sending letters to seven sports organizations requesting information on their steroid-testing policies.

U.S. Reps Tom Davis (R-Va.) and Henry Waxman (D-Calif.), the leaders of the House Government Reform Committee that held a nationally televised hearing last month on steroid use in baseball, sent letters yesterday to the commissioners and chief executives of the NBA, NHL, MLS and ATP, the U.S. Soccer Federation, USA Track and Field and USA Cycling. The committee last week requested the same information from the NFL.

“This is the compare-and-contrast phase of the investigation,” said David Marin, Davis’ spokesman.

In the letters, Davis and Waxman said the baseball hearing was “the first in a series for the committee as part of its ongoing investigation into steroid policies for professional and amateur sports.”

-Additional reporting by the AP