Charles Koch en Popular Ohio Tax Witness Paid By Conservative Trust <P><FONT size=3 face=ARIAL><FONT size=3 face=ARIAL>An Associated Press review of records shows a favorite witness on Ohio tax and economic issues who's relied upon for his objectivity draws a hefty stipend from a conservative trust fund. Fri, 10 May 2013 21:54:17 +0000 Jim Letizia & Associated Press 35436 at