Reply #5: three ways

[northzax]

first off, Major League Baseball is exempt from anti-trust regulation after several rulings by the Supreme Court (basically, the Supremes bent over backwards several times to exempt the sport from regulations) therefore, Congress has a vested interest in the inter-state commerce of an industry exempt from anti-trust regulation.

second: the use of steroids without a prescription or for non-FDA approved purposes is a federal crime, especially if it involves interstate commerce.

third: baseball has happily taken tens of billions of dollars in public subsidies playing states and cities off each other for stadia and facilities. you take public money, you get public oversight.