The Secret Service says Congress will have to intervene if it is to have enough money to cover the cost of protecting President Donald Trump and his family past the end of September.
After that the agency will hit a federally‑mandated cap on salaries and overtime unless Congress steps in.
If lawmakers don't lift the cap, about a third of the agency's agents would be working overtime without being paid.
The president has a special fondness for Bedminster, where his daughter Ivanka and son‑in‑law Jared Kushner ‑ now both senior White House aides ‑ were married in 2009.
The Secret Service estimates that roughly 1100 employees will work overtime hours in excess of statutory pay caps during calendar year 2017.
First lady Melania Trump stayed behind in New York with the president's youngest son, Barron, for the first five months of his presidency, requiring extra security at Trump Tower.
The spending limits are supposed to last through to December, but the cost of protecting the president and the extended first family, who have travelled extensively for business and vacations, has strained the Secret Service, local governments and at least one other federal agency, the Coast Guard.
