White House chief of staff Reince Priebus is set to return to Washington, D.C., in time for the Trump administration’s budget rollout this week.

Priebus is leaving Saudi Arabia as President Trump embarks on the second leg of his nine-day trip abroad.

"He was planning to come for the first stop and then head back for the budget rollout,” White House spokeswoman Sarah Huckabee Sanders said.

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The White House chief of staff returns to Washington as the Trump administration grapples with a series of explosive revelations regarding the federal investigation into ties between the Trump campaign and Russian election meddling.

Several of the president’s advisers accompanied him on the trip, including his daughter Ivanka Trump, son-in-law Jared Kushner and senior strategist Stephen Bannon.

Vice President Pence and Kellyanne Conway stayed in Washington.

Experts say it is not abnormal for Priebus to leave such a trip.

"The chief of staff is usually more of a chief operating officer in the White House itself, and normally when your principal — whether it's the president himself or the head of Cabinet agency — goes abroad, you have his deputy and those folks staying behind to help manage operations in his absence, and also to be that communications link between that principal who's on the plane and the folks back home,” senior Brookings Institution fellow Tamara Wittes told CNN.

Priebus will work with White House budget director Mick Mulvaney to unveil the administration's budget plan this week.