washington president donald trump stop payments worth billions dollars health insurers subsidize low-income americans white house say thursday move health insurers warn cause chaos insurance market spike premiums move undermine president barack obama signature healthcare law officially call affordable care act draw criticism democrats threat lawsuit state attorneys general trump make payments guarantee insurers obamacare help low out-of-pocket medical expense low-income consumers month since take office january repeatedly threaten cut disparage bailout insurance company white house say late thursday lawfully pay subsidies health insurance company white house statement say base guidance justice department department health human service conclude appropriation cost-sharing reduction payments insurance company obamacare light analysis government lawfully make cost-sharing reduction payments statement say senate democratic leader chuck schumer house democratic leader nancy pelosi deride move joint statement say trump would single-handedly push american healthcare premiums high spiteful act vast pointless sabotage level work families middle class every corner america say make mistake trump try blame affordable care act fall back pay price it new york attorney general eric t. schneiderman say statement prepare lead attorneys general lawsuit allow president trump use new york families political pawn dangerous partisan campaign eviscerate affordable care act cost write summer court grant intervention defend vital subsidies quality affordable health care ensure millions families across country coalition state stand ready sue president trump cut off white house say ca n't lawfully pay obamacare subsidies