tax overhaul legislation pass u.s. senate jettison long-held republican goal repeal corporate alternative minimum tax amt move see hurt company invest heavily research development senate inclusion amt put bill pass narrowly last saturday collision course republicans house representatives whose version would repeal corporate amt house republicans call tax eliminate final legislation hammer house-senate conference committee orrin hatch chairman tax-writing senate finance committee say wednesday final tax bill congressional republicans hope get president donald trump signature dec. 25 christmas holiday likely retain amt detail impact amt company industries invest 20 percent corporate amt alternative regular corporate income tax compute tax owe design limit benefit deductions tax credit include credit popular silicon valley top corporate rate 35 percent wind pay amt since congressional republicans want cut tax rate 20 percent amt could affect many company retain amt reform even harmful present form u.s. chamber commerce business lobby group say website intend impact congress work years enact globally competitive tax code company u.s. pharmaceutical medical research industry plow 17 percent total revenue recent fiscal year accord thomson reuters data software industry service invest 14 percent revenue technology equipment company invest 12 percent revenue healthcare service equipment sector spend 5.6 percent revenue recent fiscal year manufacturers also invest significantly boeing ba.n invest percent revenue last year research development lifeblood manufacture nam support pro-growth tax reform work key policymakers ensure final bill inadvertently harm manufacture say chris netram vice president tax domestic economic policy national association manufacturers lobby group factbox corporate alternative minimum tax threat hit pharma tech