washington new republican bill replace obamacare unveil u.s. senate monday back president donald trump accord one two republican senators craft legislation lawmaker senator bill cassidy louisiana tell reporters optimistic legislation could pass sept. 30 deadline attract bare minimum 50 vote need succeed republican-led senate tie-breaking support vice president mike pence bill cassidy sponsor senator lindsey graham south carolina could revive republican hop overturn affordable care act weeks last attempt july 28 come one vote short humiliate defeat trump senate republican leader mitch mcconnell new measure would give healthcare power state revamp version legislation gain enough support summer healthcare debate mitch say get 50 vote hold vote tell president say cassidy note bill also draw favorable comment key july vote republican senator john mccain arizona senate republicans doubt successful last-ditch effort year replace former democratic president barack obama signature healthcare law easy get 50-plus-one vote everybody kind get another idea open say senate majority whip john cornyn chamber republican cassidy say legislation fulsome support white house officials include pence say seek rally support state governors graham former republican senator rick santorum hold discussions conservative house freedom caucus play key role get obamacare repeal bill house representatives early year approve senate bill would need reconcile house legislation chamber would need vote second time since democrats oppose repeal obamacare republicans need use parliamentary procedure know reconciliation move healthcare legislation simple majority senate control 52-48 margin tool allow reconciliation contain 2017 budget resolution expire fiscal year sept. 30. new senate obamacare repeal bill due monday senator