A judge rejected a push for a new trial in a multimillion-dollar political conspiracy case against rapper Prakazrel “Pras” Michel of the Fugees on Friday.

U.S. District Judge Colleen Kollar-Kotelly found his defense attorney’s use of a generative AI program during closing arguments and other errors during the Washington D.C. trial didn’t amount to a serious miscarriage of justice.

Michel was found guilty of 10 counts after a jury heard testimony from witnesses ranging from actor Leonardo DiCaprio to former U.S. Attorney General Jeff Sessions. He faces up to 20 years in prison on the top charges. He is free ahead of sentencing, which has not yet been set.

The Grammy-winning rapper was accused of funneling money from a now-fugitive Malaysian financer through straw donors to Barack Obama’s 2012 reelection campaign, then trying to squelch a Justice Department investigation and influence an extradition case on behalf of China under the Trump administration.