One of the bills Golden endorsed, which counts Democratic U.S. Rep. Chellie Pingree of Maine's 1st Congressional District as an original backer, would help Maine fund the expansion of Medicaid by providing more federal dollars to ease the transition to a bigger program.

When the federal government initially pushed for states to expand their Medicaid programs to cover low-income residents who earned no more than 138 percent of the federal poverty level, it offered them a lure: For the first three years, federal taxpayers would pick up the entire extra cost.

The subsidy gradually trailed off until the sixth year, when states received 90 percent reimbursement, the normal rate for the Medicaid program.

The deadline to accept that deal passed in 2014, so the sweeteners no longer apply to states such as Maine that joined the expansion program late. Maine expanded its program this year after voters endorsed it in 2017.

Golden's proposal, which a number of other legislators are also advocating, would open the door to the same terms that Maine initially rejected because Gov. Paul LePage firmly opposed the expansion of Medicaid.

It's an idea that's been around for awhile. U.S. Sen. Angus King, a Maine independent, backed a similar bill in 2016 that failed to win congressional support.

READ MORE: Jared Golden provides ‘road map' to his health care agenda