washington comprehensive reform u.s. tax code still likely pass end 2017 despite government spend deal president donald trump strike democrats u.s. treasury secretary steven mnuchin say thursday interview fox business network mnuchin say worry plan go track either democrats surprise deal wednesday republican president conservative republicans make demand still viable get do year mnuchin say path get do year still hopeful get do add say trump top priority ask whether concern however democrats could use fund deal strike wednesday make demand reject tax cut wealthy push cut middle income earners mnuchin say instead say wednesday deal clear deck 90 days room focus tax think big win add expect democrats back final plan separately axios report freedom caucus conservative faction house republicans plan unveil tax plan would cut corporate tax rate current 35 percent 16 percent would also double standard abandon idea revenue neutrality push kind welfare reform axios say cite people familiar matter ask report mnuchin tell fox business network worry gop revolt add lawmakers could push ideas leadership part regular legislative process mnuchin give detail administration tax proposal wednesday trump say would offer detail tax reform plan two weeks mnuchin say tax overhaul still sight 2017