JD Vance was caught on a microphone in the White House making a bizarre comment about "letting Marco make his bet first".

The moment came as Donald Trump was speaking to reporters in the White House, responding to a question about replacing Iran with Italy in the upcoming World Cup.

Trump said, "That's an interesting question. Is that what they are proposing?" Then, Vance can be heard on the microphone from behind him.

He appeared to joke: "Let Marco make his Polymarket bet on that first."

Many social media users have picked up on the moment, sharing it on X.

One wrote: "JD Vance makes bizarre comment to journalist following speculation of insider trading at the White House: "Let Marco make his Polymarket bet on that first."

Another added: "Vice President JD Vance jokes about Secretary of State Marco Rubio placing a futures bet on Polymarket for Italy to replace Iran at the World Cup."

A third said: "JD Vance makes bizarre comment to journalist following speculation of insider trading at the White House."

It came after Federal authorities arrested a US Army Special Forces soldier involved in the capture of ousted Venezuelan president Nicolas Maduro after allegedly winning more than $400,000 betting on his removal from office.