Jackson added that she needs to clarify to scope of Trump's order to see if commuting Stone's sentence also applies to his supervised release.
Trump commuted the sentence Friday for his former adviser just as Stone was due to report to prison Tuesday. He was convicted last fall for lying to Congress, witness tampering and interfering in the House's Russia investigation, which searched for ties between the Trump campaign and Moscow.
Stone, 67, was sentenced in February but he remained free on bail during his appeal.
White House press secretary Kayleigh McEnany said Friday Stone had been a "victim of the Russia hoax," using language Trump has often used to describe the Russia investigation.
"The Russia investigation was of paramount importance. Stone was prosecuted and convicted because he committed federal crimes. He remains a convicted felon and rightly so," he wrote.