The president’s budget office has been placed on leave, the White House announced on Monday, amid reports that White House Chief of Staff John Kelly was under investigation for a lack of ethics standards.
The resignation of White House budget director Scottie Nell Hughes, a veteran of the George W. Bush administration, comes as tensions between the president and congressional Democrats ramped up amid a government shutdown.
Hughes resigned on Saturday in a letter to the House of Representatives, the Associated Press reported.
The Associated Press also reported that House Oversight Committee Chairman Darrell Issa, R-Calif., was also investigating.
The White House did not immediately respond to a request for comment from Newsweek on the reports.
Kelly, a former Republican congressman from New Jersey, took office in January.
He served in the George H.W. Bush and George W.-Cheney administrations before serving as deputy national security adviser.
He was named to the post by Trump in January of this year.
The Republican-controlled Congress is facing a critical deadline this week to fund the government until March 31, after Republicans failed to get a bill to the president’s desk.
The administration has been unable to find $1.1 trillion in spending cuts in the current budget, and it has yet to negotiate a spending deal.
Trump and other GOP lawmakers have insisted that any deal must include more funding for military operations in Afghanistan, a vital priority for the GOP.
They have also accused Democrats of using the shutdown as leverage in the budget talks, though Trump has said that negotiations are still on track.