Secret Service Director Randolph "Tex" Alles is telling agents that he is "fighting" to get them paid for hundreds of hours of overtime they've worked under the Trump White House, USA Today reported Thursday.

In an agency-wide memo, Alles said that he is working on a multiyear deal with Congress that would raise statutory caps on agents' salaries and overtime.

The announcement came after the newspaper reported Monday that the Secret Service could no longer pay more than 1,000 agents who hit federally mandated caps that were intended to last the remainder of the year.

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That the Secret Service can no longer pay many of its agents is in large part due to its efforts to protect President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE and his large family.

Under the Trump administration, the Secret Service is reportedly charged with protecting a record 42 people, including 18 Trump family members. By comparison, the agency protected 31 people under the Obama administration.

Further complicating the efforts are the president's frequent trips away from Washington. Trump has spent most weekends since taking office at one of his properties, including Mar-a-Lago in Florida and his golf club in Bedminster, N.J.

At the same time, the Secret Service also provides protection to the president's family members, including his adult children, who have travelled often for business trips and vacations.

"The president has a large family, and our responsibility is required in law,'' Alles told USA Today in an interview published Monday. "I can't change that. I have no flexibility."

Alles said in a statement that the funding shortfall is due to "overall increase in operational tempo" and has been an issue for nearly a decade.