Where a defendant filed patently false and groundless tax returns, the returns were sufficient evidence of a defendant’s knowledge of an illegal activity.The 7th U.S. Circuit Court of Appeals affirmed a decision by U.S. District Judge Rodolfo (Rudy) Lozano, Northern District of Indiana.Eugene Clarke submitted federal tax returns for the “Eugene Clark Trust” in 2009 for tax years 2006, 2007 and 2008. Each return claimed that the trust had received $900,000 in income and expended $900,000 in fiduciary fees, …