By Caitlin Yilek,Kaia Hubbard

Copyright cbsnews

Democrats and Republicans appear locked in their positions as the government shutdown approaches the one week mark without a clear resolution in sight.

The Senate is expected to vote again Tuesday on dueling measures to fund the government and end a shutdown after the bills fell short of the 60 votes needed for a fifth time on Monday. Senate Majority Leader John Thune said Monday that the chamber will keep voting on the same competing bills over and over.

Republicans have been aiming to get Democrats in the Senate to cross the aisle and support a House-passed measure, which would fund the government until Nov. 21. But Democratic leaders have been firm in their demand that a funding measure include an extension of health insurance tax credits. President Trump said Monday that he’s willing to work with Democrats on the health care issue, but only after the shutdown ends.

There is a White House memo circulating that the 750,000 furloughed workers are not guaranteed back pay, an administration official confirmed. A 2019 law signed by Mr. Trump had been widely interpreted to guarantee back pay, but a senior White House official told Axios “Does this law cover all these furloughed employees automatically? The conventional wisdom is: Yes, it does. Our view is: No, it doesn’t.”