A handful of Republican governors are asking President Donald Trump and GOP leaders in Congress to keep in place a key part of the Affordable Care Act that is responsible for extending coverage to more than 11 million Americans. 

The governors of Ohio, Nevada, Michigan, Massachusetts and Arkansas say they don't want to see an ACA repeal do away with the expansion of Medicaid that has resulted in free or low-cost coverage for many of their constituents. 

Although much of the focus on the ACA has been on the private insurance marketplaces, the health law's greatest impact came through the Medicaid program that 31 states ultimately embraced. The expansion, which is funded almost entirely by the federal government, extended coverage to individuals and families with incomes below 138 percent of the federal poverty level.