Where a U.S. District Court judge found that a defendant did not knowingly lie while testifying, the court erred in applying an obstruction of justice enhancement at sentencing.The 7th U.S. Circuit Court of Appeals affirmed in part and reversed in part a decision by Judge James B. Zagel.Gwendolyn Jackson and Latonja Spencer participated in a scheme to defraud various Chicago-area mortgage lenders from approximately August 2004 until May 2008. The scheme was led by Bobbie Brown Jr. Brown arranged with home builders and …