months internal discord republicans u.s. house representatives thursday approve bill overhaul affordable care act know obamacare attack since enact 2010. two attempt recent weeks pass overhaul bill collapse confusion republicans overcome differences 217-213 vote send bill senate outlook uncertain obamacare bring health insurance coverage millions americans early estimate nonpartisan congressional researchers impact republican rollback bill know american health care act ahca say would leave 24 million americans without insurance coverage 2026. bill main provision republican plan would maintain obamacare popular provision would allow young adults stay parent health plan age 26. bill would let state opt obamacare mandate insurers charge rat sick healthy people would also allow state opt obamacare requirement insurers cover 10 essential health benefit maternity care prescription drug cost measure would provide state 100 billion largely fund high-risk pool provide insurance sick patients bill also would provide billion five years help pre-existing condition pay insurance would let insurers mark premiums 30 percent lapse insurance coverage two months insurers provision long seek ability charge old americans five time young people obamacare could charge three time bill would end 2018 obamacare income-based tax credit help low-income people buy insurance would replace age-based tax credit range 2,000 4,000 per year would cap upper-income level obamacare credit give help low incomes republican plan would largely age-based republican bill would abolish obamacare tax include medical devices health insurance premiums indoor tan salons prescription medications high-cost employer-provided insurance know cadillac plan tax pay obamacare republicans say would pay part law want keep bill would also repeal obamacare financial penalty 2016 tax year purchase insurance well surtax investment income earn upper-income americans would repeal mandate large employers must offer insurance employees obamacare 30 state include dozen republican state expand medicaid government health insurance program poor half obamacare enrollees obtain insurance expansion bill would allow medicaid expansion continue jan. 2020. date expansion would end medicaid fund would cap per-person basis state medicaid plan would long cover obamacare-mandated essential health benefit fulfil republican promise return control state factbox republicans obamacare rollback would dump medicaid expansion tax