A federal appeals court has overturned the federal sexual abuse convictions and life sentences of an Oklahoma man who was at the center of a U.S. Supreme Court ruling on tribal sovereignty. The 10th U.S. Circuit Court of Appeals on Tuesday ruled that jury instructions regarding inconsistent statements by key witnesses against Jimcy McGirt during his trial on charges of abusing a 4-year-old girl in 1996 were incorrect. The trial court judge instructed the jury that testimony by the girl, her mother and her grandmother during the federal trial that was not consistent with their testimony during the original trial in 1997 could only be used to consider the witnesses’ credibility, not whether they were testifying truthfully.