Medicaid funding

The BCRA would phase out the Medicaid expansion established by the Affordable Care Act, which extended the program to those making between 100% to 138% of the federal poverty limit.

The Congressional Budget Office estimated in March that the Medicaid rollback under the AHCA would result in approximately 14 million people coming off the rolls in the next decade. The Senate's rollback isn't much different.

The CBO also estimated the House's bill would result in more than $800 billion in cuts to federal Medicaid spending over the next decade.

If the Senate's bill passes, the cuts would likely be hundreds of billions more, due to a small, but significant shift in the benchmark used to calculate funding for the program.

The proposed phaseout of Medicaid expansion led Nevada Sen. Dean Heller, a Republican, to come out in opposition of the bill on Friday.

"You have to protect Medicaid expansion states. That's what I want. Make sure we're taken care of here in the state of Nevada," Heller said.

Republican Gov. Brian Sandoval expanded Medicaid in Nevada, which has the 15th-highest drug-overdose death rate in the US. Sandoval said on Friday that expansion has led to 210,000 Nevadans gaining coverage.