The Old School and Wedding Crashers actor sat next to the president and first lady and had what appeared to be a pleasant exchange, mostly with him.
The clip quickly made its way to social media for dissection and debate - and Vaughn was soon trending on Twitter.
The exchange is likely to draw comparisons to the scene a few months ago when former President George W. Bush and comedian Ellen DeGeneres shared a suite at a Cowboys game, enjoying each others' company.
Thankfully, there were also jokes. A rep for Vaughn told People the actor and Trump "met this evening at the game briefly".
Vaughn is a libertarian and publicly supported Sen. "And that when you start drawing the lines, saying, as a society, we think this is inappropriate, we're going to pass laws to protect them from themselves and or take things away to protect themselves or move money from here to there, that you realize that you wake up with corruption and without the unintended consequences you'll wake up with a lot of problems that didn't exist prior".
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On Monday night, Hollywood star Vince Vaughn was spotted chatting amicably with President Donald Trump at the CFP National Championship Game in New Orleans, where the LSU Tigers beat the Clemson Tigers. One of the most outspoken voices on the right in Hollywood for years, Vaughn has been a vocal supporter of former United States representative Ron Paul and his son Rand Paul, a U.S. senator from Kentucky. The two then shook hands, Trump did some pointing and some clapping, Vaughn offered friendly gestures to other luxury box attendees, all of it captured on camera and soundtracked by Neil Diamond.
Vaughn also said banning guns would be like "banning forks in an attempt to stop making people fat".
In October, DeGeneres was caught on camera sitting next to former President George Bush at an National Football League game.
She addressed the issue on her show the following Monday.
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