Story highlights If enacted into law, the bill would significantly overhaul Medicaid

Several Republican governors have expressed concerns about the proposed changes

(CNN) Governors on both sides of the aisle are warily watching the Republican health care bill move through Congress, anxious over potentially significant cuts to Medicaid funding.

If enacted, the bill, which was narrowly passed by the House on Thursday and could face significant changes in the Senate, would significantly overhaul Medicaid . It would send the states a fixed amount of money for each Medicaid enrollee, known as a per-capita cap.

States could also opt to receive federal Medicaid funding as a block grant for the adults and children in their programs. That would mean states would get a fixed amount of federal funding each year regardless of how many participants are in the program.

Either of those options would limit federal funding, shifting that burden to the states. But many states don't have the money to make up any shortfalls, so in such cases they would likely either curtail benefits, reduce eligibility or cut provider payments. The block grant would be more restrictive since the funding level would not adjust for increases in enrollment, which often happens in bad economic times.

"They are talking about slashing $800 billion, Chris, from Medicaid coverage. $800 billion," Virginia Gov. Terry McAuliffe, a Democrat, told CNN's Chris Cuomo Friday on "New Day." "Who do you think is going to be affected by that?"

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