Senate Majority Leader Chuck Schumer (D-NY) says senators can expect “long days and nights, and potentially weekends” in the coming month as they tackle several issues, including a way around Alabama Sen. Tommy Tuberville’s continuing blockade of military promotions.

Schumer, in a letter to his Democratic colleagues, outlined his agenda for the senate in December. One issue is the ongoing blockage of more than 350 military promotions, begun back in February by Tuberville in protest to the Pentagon’s abortion travel policy.

In his letter, Schumer called the blockade “brazen and reckless,” and “another area where extreme and unprecedented obstruction by a single Republican Senator has eroded centuries of Senate norms and injected extreme partisanship into what has long been a bipartisan process.”

Attempts to contact Tuberville’s office for comment were not immediately successful.

The policy covers travel expenses if military members are stationed in a state where abortion is illegal. Last month, Tuberville said he is open to different options to end the blockade.

The Senate Rules Committee later advanced a resolution, on a party line vote, that would allow all the promotions blocked by Tuberville to be considered en bloc, or in large groups, to the full Senate.

Schumer, in his letter, said he will bring the resolution to the floor in coming weeks “so we can swiftly confirm the hundreds of highly qualified and dedicated military leaders being held up by Senator Tuberville before the end of the year.”

The measure requires 60 votes to pass, meaning at least nine Republicans would have to support it on the Senate floor, according to Politico.

The Week is reporting that Sen. John Thune (R-S.D.) has called the push for a 60-vote threshold to overcome Tuberville’s hold a “heavy lift among Republicans.”