washington/san francisco eighteen u.s. state sue president donald trump administration friday stop scrap key component obamacare subsidies insurers help millions low-income people pay medical expense even trump invite democratic leaders negotiate deal one day administration announce plan end payments next week trump say would dismantle obamacare step step late action raise concern chaos insurance market subsidies cost billion year estimate 10 billion 2018 accord congressional analysts far subsidies concern want make insurance company rich trump tell reporters white house make fortune get kind money trump action take aim critical element 2010 law democratic predecessor barack obama signature domestic policy achievement frustrate failure fellow republicans control house congress repeal replace obamacare trump take several step chip away democrats accuse trump sabotage law democratic attorneys general 18 state well washington d.c. file lawsuit federal court california late friday state include california connecticut delaware kentucky illinois iowa maryland massachusetts minnesota new mexico new york north carolina oregon pennsylvania rhode island vermont virginia washington state state ask court force trump make next payment legal experts say state likely face uphill battle court effort gut subsidies warn even plan contain fallout breathtakingly reckless new york attorney general eric schneiderman say effort simply blow system new lawsuit would separate case pending appeal court district columbia 16 democratic state attorneys general defend legality payments subsidies vanish low-income americans obtain insurance obamacare online marketplaces insurers sell policies would face high insurance premiums out-of-pocket medical cost would particularly hurt lower-middle-class families whose incomes still high qualify certain government assistance 10 million people enrol obamacare online marketplaces receive subsidies trump action come weeks period start nov. individuals begin enrol 2018 insurance coverage law marketplaces administration make next payment insurers schedule wednesday u.s. attorney general jeff sessions say senate democratic leader chuck schumer express optimism chance deal republicans continue subsidy payments go good opportunity get do bipartisan way negotiations december broad federal spend legislation get do sooner schumer tell reporters trump offer invitation democratic leaders come white house also lash negotiate deal good everybody always bloc vote everything like obstructionists trump tell reporters senate fail july september pass legislation back trump repeal obamacare due opposition handful republican senators one susan collins moderate republican maine contemplate run governor next year friday say plan remain senate would use voice reform healthcare system hospitals doctor health insurers state insurance commissioners patient advocate decry trump move say consumers ultimately pay price call congress appropriate fund need keep subsidy payments share u.s. hospital company health insurers close friday subsidies announcement centene corp cnc.n close 3.3 percent molina healthcare moh.n close 3.4 percent among hospital share tenet healthcare thc.n finish 5.1 percent low community health systems cyh.n decline 4.0 percent nonpartisan congressional budget office estimate erase subsidies would increase federal deficit 194 billion next decade government still would obligate part obamacare help lower-income people pay insurance premiums trump candidate last year promise roll back law formally call affordable care act receive applause late action appearance friday group conservative voters step step step big step yesterday trump say one one go come go great healthcare country early twitter call obamacare break mess implode refer pet insurance company democrats republicans seven years vow get rid obamacare deep intra-party divisions scuttle efforts get legislation senate hold slim majority since take office january trump threaten many time cut subsidies health insurers plan stay obamacare market prepare move many state submit two set premium rat regulators without subsidies national association insurance commissioners say change would drive premium cost consumers least 12 15 percent 2018 cut billion payments insurers 2017. white house announce cut-off hours trump sign order intend allow insurers sell lower-cost bare-bones policies limit benefit consumer protections republicans call obamacare unnecessary government intrusion american healthcare system democrats say law need fix note bring insurance 20 million people u.s. state sue block trump obamacare subsidies cut