Democrats trumpeted new polling Thursday showing that their proposal for greater tax credits for parents is so popular, even 60% of Republicans approve.

At the same time, they admitted they dont know if parents will receive the credit as a monthly benefit or if the extra money will be available in future years.

Its not clear yet if the monthly payments will remain in the bill, Sen. Sherrod Brown (D-Ohio) told HuffPost.

Most parents would get hundreds of dollars per child, per month, from the tax credit changes in the American Rescue Plan legislation that Democrats are drafting in the House of Representatives.

But the monthly payments could hit a snag in the Senate, as they may run afoul of Senate rules against doing certain types of policy in the special budget reconciliation process. Democrats are using reconciliation to pass the bill with only 50 votes, instead of the usual 60 needed to break a filibuster.

Senators said Thursday that the Senate parliamentarian, Elizabeth MacDonough , might strike the monthly payment feature this week by deeming it improper according to obscure Senate rules.

We dont think that she will, Sen. Michael Bennet (D-Colo.) said. We dont know.

Other provisions would remain, including an increase of the child tax credit from $2,000 to $3,600 for this year. The bill would also eliminate the requirement that parents earn a certain amount of money in order to qualify.

As soon as we pass the Recovery Act, we will fight to make it permanent and to make sure they can get the checks monthly if they choose, Brown said.