washington proposal u.s. republicans repeal replace obamacare health insurance program suffer serious new setbacks within party sunday senator ted cruz express opposition senator susan collins dig strong criticism legislation two republican senators john mccain rand paul already say last week would vote so-called graham-cassidy bill one vote among republicans would effectively kill party late effort seven-year mission overturn obamacare deal new blow president donald trump senate majority leader mitch mcconnell republican say intend put bill vote week withhold public comment past days rank-and-file republicans abandon trump treasury secretary steven mnuchin interview cnn state union reflect uncertainty battle go close hope pass say phil novack spokesman cruz confirm republican senator say event texas right vote think senator mike lee vote either lee conservative republican close ally cruz spokesman lee say senator want technical change legislation provide detail commit anything yet conn carroll say email politico report cruz complain late obamacare repeal bill address concern bring cost healthcare friday news mccain opposition send share health insurance company centene end 1.6 percent high humana close 0.2 percent trump pressure fellow republicans quick passage would first victory major legislation democrats expect vote collins perhaps moderate republican senators appear poise oppose party late replacement plan affordable care act former democratic president barack obama signature legislative achievement along mccain alaska senator lisa murkowski vote july early version obamacare repeal difficult envision scenario would end vote bill collins say cnn state union sunday two days say lean legislation collins say concern center impact legislation would federal medicaid program help disable children low-income elderly people get healthcare senate republicans control 52-48 face saturday deadline decide bill expire rule let healthcare proposal pass simple majority 100-member chamber instead 60-vote threshold need legislation paul interview nbc meet press attack centerpiece republican bill would federal government basically turn health insurance system state form block grant could remove block grant vote actually agree paul say good conscience vote keep spend key senate republicans still push forge ahead senator lindsey graham lead charge late version obamacare repeal tell abc believe would vote pass legislation way know people vote vote say graham detail path see victory u.s. senate opposition obamacare repeal bill grow