The older brother of Pope Leo XIV attended the President's UFC Freedom 250 birthday event on the White House Lawn Sunday.

Louis Prevost, 73, a retired Navy veteran living in Florida, has gained attention for supporting Donald Trump in contrast with his brother who has often clashed with the President.

After getting to meet with Trump in the Oval Office last May, Prevost was again in attendance at the White House's UFC Freedom 250 celebration.

He was spotted in conversation at one point with Vice President JD Vance and at one point, the VP brought Prevost over to embrace and talk to Trump.

Prevost was dressed in a shirt emblazoned with the American flag and was all smiles speaking to Vance. 

Although the event was named in honor of the country's upcoming 250th birthday, Sunday was also aimed at celebrating Trump as he entered his ninth decade. 

It marks the second meeting between Prevost and the President who has publicly feuded with his brother, the leader of the Roman Catholic Church.  

While Pope Leo's old social media posts shared critical articles of Trump and Vance, his brother Louis was decidedly a Trump supporter, with a more colorful denunciation of Democrats like former House Speaker Nancy Pelosi.

Trump responded warmly to the news that Louis Prevost was a fan of his politics, telling the press he would invite him to the White House.

'I like the Pope. And I like the Pope's brother. You know one of the Pope's brothers is a major MAGA fan... He's got MAGA. He's got Trump,' Trump told reporters last May.

'I look forward to getting him to the White House. I want to shake his hand. I want to give him a big hug.' 

His wish came true just hours later as a grinning Trump posed next to the pope's brother. 

'Louis Prevost and his wife, Deborah, met President Trump in the Oval Office. It was a great meeting, and they left with Bibles in hand!' a White House official confirmed to the Daily Mail. 

It came just days after Prevost traveled with the official delegation from the United States to the Vatican to attend the pope's inaugural mass.

The delegation included Vance and his wife Usha, Secretary of State Marco Rubio and his wife Jeanette.

Pope Leo shook hands with the delegation after the Mass but gave his big brother a massive hug

Prevost conceded in an interview with Piers Morgan he would now be more disciplined about his posts on social media now that his brother is the Pope.

'I can tell you, since then, I've been very quiet, biting my tongue,' he said. 'I don't want to create waves that don't need to be there because I'm a MAGA type and I have my beliefs.'

Louis explained his posts were an attempt to 'stir the pot' on politics.

'Sometimes I like to go stir the pot,' he said. 'A lot like I think President Trump does. He says things just to stir the pot. Cause it's fun to like get into some of these debates with people sometimes from the other side.'

Prevost also revealed he served on the same ship in the Navy as former Trump advisor and dynamite MAGA figure Steve Bannon.

'I know Steve Bannon, I don't know if he knows me but we served together in the same ship in the Navy, and I know what he was like,' Prevost said, joking he had been trying to get Bannon to attend some of the reunions with his shipmates.

Despite concerns from some MAGA figures about the new pope, Louis Prevost tried to reassure them about his brother.

'He's not left, he's not right, he looks at the whole scene, takes information from both sides and somehow finds a way to go down the middle and not ruffle too many feathers,' he said.

Vance and the American delegation met with the pope and presented him with a personalized Chicago Bears football jersey and a letter from President Trump to the United States inviting him to visit the United States. 

'If and when he meets with President Trump, I don't doubt there will be some bumps in the discussion and some heated conversations,' he conceded in his interview with Morgan.

However, the President and the Holy Father have since gone on to issue withering statements about one another, albeit indirectly on the pope's part, regarding the war on Iran. 

The pontiff has also disagreed with Trump regarding the Department of Justice's reinstitution of the death penalty. 

The feud simmered down after Pope Leo issued a clarifying message about his remarks and accused the media of sensationalizing the narrative.