It seems US President Donald Trump is unaware he is also President of the US Virgin Islands, announcing the two had met.

While speaking about the impact of recent hurricanes on the area, Mr Trump said in a speech:

"I went to Puerto Rico and I met with the President of the Virgin Islands.

"These are people that are incredible people. They've suffered gravely.

"And we'll be there. We're going to be there. Really, it's not even a question of a choice. We don't even want a choice.

"We're going to be there, as Americans. We love those people and what they've gone through."

The White House have updated their official transcript of Mr Trump's speech to clarify Mr Trump was referring to the governor when he said "president".

Loading

Kenneth Mapp has been Governor of the US Virgin Islands since 2015.

Loading

The islands, in the Caribbean, became a territory of the US in 1917.

Mr Trump's slip-up inspired speculation to what the meeting involved.

Loading

Reward offered for information to impeach Trump

Meanwhile, US porn mogul and Hustler publisher Larry Flynt has advertised a $US10 million reward for information leading to Mr Trump's impeachment.

Loading

Mr Flynt's full-page advertisement in the Washington Post called for a "smoking gun".

"Buried in Trump's top-secret tax returns or in other records from his far-flung investments there may be a smoking gun," the ad said.

Mr Flynt said he felt it was his "patriotic duty, and the duty of all Americans, to dump Trump before it's too late".

"Most worrisome is that, long before climate change apocalypse strikes, Trump might trigger a nuclear world war," he said.