Lawmakers are scrambling to address skyrocketing health care costs in the final days before Congress leaves Washington for the holidays, with enhanced tax credits that make insurance premiums more affordable for millions of Americans set to expire at the end of the month.

The Senate shot also shot down advancing a bill that would've deposited $1,000 to $1,500 into health savings accounts, or HSAs, for eligible consumers

The Senate will vote this week on a GOP bill to put money in health savings accounts, as well as a Democratic bill to extend the expiring ACA subsidies. Both are expected to fail.

Senators rejected a Democratic bill to extend the subsidies for three years and a Republican alternative that would have created new health savings accounts.

Republicans are confronting old divisions as members clash over expiring insurance subsidies used by millions of Americans.

House Republicans offer health care bill without extending Obamacare subsidies but Democrats oppose the proposal.

House lawmakers have four legislative days left to negotiate a health care deal before leaving for the holiday recess. Just last week, the Senate failed to advance bills to extend expiring subsidies leaving insurance premiums set to spike in the new year.