But the president admits tinkering with the nation's health care system is complicated. But they also want to keep their health insurance. They have little margin for error, as NPR's Scott Horsley reports. Republicans can afford to lose only two votes in order to pass the legislation in the Senate.
Other Republican senators have expressed concerns.
During an interview on "Fox & Friends" taped Thursday at the White House and aired Friday, Trump appeared eager to avoid offending any of the holdouts. "States are ultimately going to have to ration [their allotment] and say, 'Well, we only get so much from Medicaid, therefore we can not insure more disabled people, more elderly people.' It is frightening for those on low income", Mosman said. When insurers don't know what the rules of the road will be for next year and beyond, it makes it very tough for them to commit to participating on the exchanges or to set rates. Five senators, including conservatives like Johnson and moderate U.S. Sen. Shelley Moore Capito, R-W.Va., answered only "we'll see" when asked if she would support a pivotal procedural vote, expected Wednesday, on whether to formally begin debate. So, the status quo is unsustainable completely, and so we have got to act.
States could not get exemptions to Obama's prohibition against charging higher premiums for some people with pre-existing medical conditions, but the subsidies would be lower, making coverage less affordable, Pearson said. As a result, despite being eligible for premium tax credits, few low-income people would purchase any plan, CBO and JCT estimate. The Senate bill also assumes that after 2025, Medicaid bills will grow more slowly than they have historically.
The Senate bill would roll back much of Obama's health care overhaul. That's the so-called "death spiral".
"Throwing 22 million Americans off of health insurance, raising premiums for older Americans, defunding Planned Parenthood and giving $231 billion in tax breaks to the top 2 percent is a cynical and immoral proposal", said Sen.
"I believe that the bill that the Senate will vote on, assuming they get to that point, will have some sort of mechanism to cause participation in it", said former GOP Senate staffer Rodney Whitlock.
HORSLEY: So why isn't that already in the bill?
The estimate, released less than a week after Republicans in the upper chamber unveiled their health care legislation and just days ahead of a potential vote, could complicate the already hard task of getting enough GOP support to pass the measure.
WHITLOCK: If you are concerned that that might be the case, then, strategically, you may want to wait until the very last second to be presenting the language to the parliamentarian. Even with those provisions, many insurance companies have struggled to attract a good mix of healthy and less healthy customers. And that could leave the individual market in worse shape than before Obamacare. It would let insurers provide fewer benefits, offer less generous subsidies than Obama to help people buy policies and end the statute's tax penalties on people who don't buy policies and on larger firms that don't offer coverage to workers. "They will have much higher deductibles than they are used to seeing".
A number of Republican governors have joined doctors, hospitals and patient advocacy groups in opposing the bill, in part because of its cuts to federal Medicaid funding that covers more than 70 million poor Americans. The senior lobby is promising to hold all senators accountable for their votes.