Disgraced Olympic track star Marion Jones has asked President Bush to commute her six-month prison sentence for lying to federal agents about her use of performance-enhancing drugs and a check-fraud scam. The Justice Department confirmed Monday that Jones is among hundreds of convicted felons who have applied for presidential pardons or sentence commutations, but it would provide no further details. It's unclear when Jones, who won three gold and two bronze medals at the 2000 Sydney Olympics, made the request. She entered prison March 7 in Fort Worth, Texas.