washington crucial detail republican tax plan include propose corporate rate flux late tuesday negotiators u.s. congress rush finalize plan ahead self-imposed wednesday deadline republican tax writers tinker best reconcile differences bill pass house representatives senate without exacerbate deficit impact legislation could add much 1.5 trillion national debt next decade accord independent estimate meet official bipartisan negotiate committee schedule wednesday republicans still weigh best scale back popular individual deductions mortgage interest local tax payments whether propose corporate rate 20 percent bill may rise 21 percent still talk senate republican john cornyn say possible 21 percent corporate rate senate house bill propose reduce corporate tax rate 20 percent current 35 percent eliminate scale back tax pay rich americans offer mix bag cut individuals families would short term republican senator orrin hatch head senate tax-writing committee one negotiators tell reporters reference corporate tax rate hesitate give figure point still debate analysts say percentage point change corporate rate equal 100 billion revenue decade shift even slightly could help negotiators attempt keep bill within preset budget parameters congressional researchers estimate tax plan write would add 1.5 trillion 20 trillion national debt 10 years project positive effect economy trillion effect president donald trump want sign tax bill year end potentially mark republicans first major legislative victory since trump victory give party control white house well chamber congress trump schedule host republican tax negotiators white house lunch wednesday deliver speech lay close argument legislation alongside five middle-class families would benefit senior administration officials tell reporters tuesday trump expect counter claim tax plan largely benefit corporations wealthy highlight would also cut rat lower- middle-income taxpayers could see additional benefit high wag follow corporate rate cut officials say independent government analyse nonpartisan joint committee taxation assist congressional tax writers congressional budget office examine budget impact legislation conclude wealthy taxpayers would disproportionately benefit republican proposals ask stand benefit republican tax legislation half american adults select either wealthy large u.s. corporations accord reuters/ipsos poll release monday senator susan collins key moderate republican whose support critical passage senate bill say need review final package cast another vote critical tuesday talk cut top individual tax rate lot discussion low top individual rate 37 percent corporate rate low collins say house tax plan would maintain top individual tax rate pay wealthy 39.6 percent senate plan would cut 38.5 percent think low top rate good idea collins tell reporters crucial detail republican tax plan flux deal deadline loom