washington congressional republicans ramp discussions overhaul u.s. tax code prominent republican anti-tax advocate say wednesday produce bill september hefty corporate tax cut grover norquist head anti-tax americans tax reform lobbyist close republican leaders say big six group republican tax decision-makers target end month produce basic framework bill introduce september house white house senate meet couple months package september say norquist conservative tax small-government activist meet big six members group meet wednesday even two members emerge 45 minutes late say unite tax principles offer comment whether agree framework one page one unify page white house economic adviser gary cohn say house representatives ways mean committee chairman kevin brady also tell reporters unity expect statement come days central discussion 35 percent corporate income tax rate much cut whether cut make permanent white house want slash rate 15 percent seven years congressional republicans try settle permanent rate increase deficit president donald trump representatives big six cohn treasury secretary steven mnuchin really excite 15 percent rate corporations norquist say congressional big six members brady senate majority leader mitch mcconnell house speaker paul ryan senate finance committee chairman orrin hatch norquist play key role tax negotiations washington years trump insist low tax rate pass-through businesses tax top individual tax code rate 15 percent norquist say big six agree trump 15 percent corporate rate achieve permanent basis without add federal deficit administration officials say steep tax rate cut would mean revenue loss trillion decade independent analysts say solve deficit issue white house open make 15 percent rate temporary expiration seven years norquist say would conflict republicans congress want permanent tax overhaul would ensure rat would renew trump presidency mnuchin say wednesday morning administration would sensitive increase debt close release detail plan assure believe detail plan responsible impact economy cost debt say current law company adhere complex depreciation schedule long take equipment wear lose value business group call 100 percent expense policy would let company write entire price equipment year purchase former president barack obama push temporary 100 percent expense economic stimulus help reverse recession take office white house consider three-year window allow 100 percent expense norquist say three years rate would return 50 percent current law washington refocus tax anti-tax activist see bill september