washington top tax law writer u.s. house representatives insist tuesday tax reform happen year despite concern among experts tax code overhaul could drag 2018 even collapse altogether president donald trump still seek first major legislative achievement focus tax reform do little advance recently amid constant distractions russia north korea race relations congress fail push dismantle obamacare republicans ramp nationwide publicity campaign favor tax law change without first decide exactly change want make house ways mean committee chairman kevin brady texan schedule deliver speech issue wednesday former president ronald reagan ranch santa barbara california committee members also attend ahead remark brady tell cnbc tuesday house senate white house unite around common tax plan detail hammer legislation introduce house republican leaders ambitious plan early year key piece discard replacement revenue-raising provision agree upon nevertheless brady say track deliver transformational bold tax reform year time acknowledge detail yet finalize lot work leave do corporate lobbyists independent experts say congress administration far apart critical issue slash rat without balloon federal deficit republicans agree low tax rat pay say stephen shay harvard law school lecturer advise tax policy u.s. treasury former democratic president barack obama shay put odds tax reform occur november 2018 midterm congressional elections 50-50. expectations tax reform fall sharply among investors wall street many believe congressional gridlock likely overhaul economically tax reform no-brainer long wind road find land mine road pretty much every week say brad mcmillan chief investment officer broker-dealer commonwealth financial network major tax reform last occur 1986 result broadly bipartisan effort take several years trump tax reform highly partisan venture republicans months overcome internal divisions obstacles get tax reform do jan. 1. push collide next month efforts prevent government shutdown default u.s. debt still experts say tax legislation might still fly still expectation sort tax bill get president desk sign midterm elections say rohit kumar tax policy expert account consult group pwc former senior senate tax aide think lot uncertainty whether call tax reform whether something like tax relief house tax chairman confident reform others less