President Donald Trump speaks during the National Prayer Breakfast, Thursday, Feb. 2, 2017, in Washington. (AP Photo/Evan Vucci)

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The March 21 dinner is slated to be held at the National Building Museum

The 2016 dinner was headlined by Mitt Romney and brought in $20.6 million

CNN  — 

President Donald Trump is set to headline the National Republican Congressional Committee’s March fundraiser, giving a hand to the group tasked with protecting Republican majorities in the House, the event’s organizer said Friday.

“We are thrilled that President Trump will speak at this year’s dinner. House Republicans are united and share his goal of making America great again,” said Rep. Steve Womack, an Arkansas Republican and chairman of the NRCC’s fundraiser.

The March 21 dinner at the National Building Museum is one of Congressional Republicans’ most important fundraising tools and has brought in large hauls before.

The White House did not immediately respond to requests for comment.

The 2016 dinner was headlined by Mitt Romney and brought in $20.6 million at an awkward time for Republicans, who were still largely keeping Trump at arm’s length.

But congressional leaders and the White House have sought to portray a unified front since Trump won the White House – despite a series of major stumbles from the new administration, capped by the rollout of an executive order banning immigrants from seven majority-muslim countries, temporarily halting refugees and barring Syrian refugees indefinitely.

Republicans currently outnumber House Democrats 240-193 – an edge that puts them well above the 218-seat majority needed to control the House.