Legal challenge claims US president did not seek proper approval for fighting event to be held on his 80th birthday.

A lawsuit is seeking to stop United States President Donald Trump from hosting an Ultimate Fighting Championship (UFC) match at the White House.

The lawsuit, lodged on behalf of two Virginia residents, is the first known legal challenge to the mixed martial arts event, which is set to be hosted on June 14.

The event will take place on Trump’s 80th birthday. It is also pegged to the 250th anniversary of the signing of the Declaration of Independence, which the US will commemorate on July 4 of this year.

The legal challenge filed on Saturday maintained that Trump did not receive proper authorisation to host the fight.

It argued that the event violated US National Park Service regulations prohibiting sporting events on federal parklands, that Congress did not consent to the construction of a towering arch overlooking the event space, and that no environmental review was conducted before the construction.

“This is fundamentally a private, commercial, corrupt use of our most sacred national monuments for private gain,” said Brendan Ballou, a lawyer for the plaintiffs. “And that is what is motivating this lawsuit.”

In a statement to the Associated Press, the White House dismissed the lawsuit as “obstructionist, baseless, and dilatory”.

The White House maintained the UFC fight was “no different than the various other White House-hosted events on the South Lawn and properly permitted events on the Ellipse and National Mall throughout the year”.

Crews have been erecting an octagon-shaped fighting cage on the South Lawn of the White House, with Trump saying the project will include a “5,000-seat arena right outside the front door of the White House”.

Attendance at the fight will be invite-only and closely monitored. The Military Times news site reported earlier this week that 1,200 service members given tickets to the event must meet certain waist-to-height ratio standards.

Public viewing areas will also be set up at the nearby Ellipse.

Trump has long been closely involved with both professional wrestling and UFC, with his casinos and event spaces hosting past events.

He regularly appeared as a version of himself in World Wrestling Entertainment (WWE) events throughout the 1990s and early 2000s. His current secretary of education, Linda McMahon, is a co-founder of the WWE.

Trump has more recently embraced UFC, which is currently owned by the same company, TKO Group Holdings, as the WWE.

UFC president Dana White has been a close ally of Trump’s.

Political analysts have credited Trump’s embrace of the sport with reaching disaffected male voters in the US, particularly during his 2024 election campaign.