washington republican u.s. senator susan collins say thursday commit vote senate tax bill cite concern healthcare loss deduction state local tax collins tell reporters christian science monitor breakfast would difficult support bill prevail two issue encourage discussions leadership collins say propose amendment tax bill would retain deduction property tax 10,000 house bill senate bill repeal affordable care act fine people purchase health insurance lead high insurance premiums collins ask lawmakers include separate bill provision would help insurers cover expensive patients would continue obamacare subsidy payments low income people two years republican maine also say one amendments tax bill refundable tax credit adult dependent care would pay close loophole carry interest collins say believe corporate tax rate need cut low 20 percent president donald trump favor say 21 22 percent would fine me say expect senate floor vote tax bill debate make individual tax cut permanent make corporate tax cut expire time individual cut senator collins say commit tax bill concern salt