Some firefighters expressed anger Sunday after a last-minute decision by Washington lawmakers dropped funding for 9/11 first responder health care program.

Members of the firefighter’s union had expected it to pass just days ago.

“It’s not a New York problem, it’s America’s problem,” Andrew Ansbro, president of the Uniformed Firefighters Association of Greater New York, said.

The stopgap bill passed to avoid a government shutdown did not include funding for those suffering from 9/11-related illnesses.

“It is unfathomable that these people will not take the responsibility to fund this,” Jim Brosi, president of the Uniformed Fire Officers Association, said.

The bill was expected to fund the World Trade Center Health Program through 2040. Currently, the program is only fully funded through 2027.

“The fact that we keep asking for repeated funding because people keep getting sick, it’s disingenuous and it’s very disappointing,” Brosi said. “35,000 people that currently have cancer deserve treatment, they shouldn’t be worried whether a facility will close, whether they will not receive authorization, or whether or not they will be overwhelmed by medical bills because the government failed to do what they promised to do.”

Some lawmakers are vowing to take action to restore funding in the future. New York Democratic Sen. Kirsten Gillibrand said in a statement, in part: “It is now our responsibility as members of Congress to be there for them [9/11 survivors and first responders] as they continue to battle the horrific health ramifications from that day and the many days after.”

Republican New York Congressman Mike Lawler, in a statement, says he will make restoring the funding one of his “top priorities in the 119th Congress,” which swears in next month.

FDNY union members also vowed to bring their fight back to Washington.

“We all made the promise to never forget. ‘Never forget’ was a promise made by the American people to look after those that answered the call that day,” Ansbro said.

A measure setting federal safety standards for lithium-ion batteries was also not included in the funding bill.

The FDNY had been pushing for federal action to regulate lithium-ion batteries often used in e-bikes. Fire Department data shows there have been more than 260 lithium-ion-related fires in the city so far this year.