The Duke of Sussex, 40, has faced scrutiny from a think tank over his US visa application following the revelation of his past drug-taking in his 2023 memoir Spare.

Prince Harry has been issued a chilling warning just days after Donald Trump was elected US President this week.

The Duke of Sussex, 40, first moved across the pond to America in 2020 after stepping back from life as a senior member of the Royal Family with his wife Meghan Markle.

His visa was approved at the time, however revelations of his past drug-taking in his bombshell memoir Spare last year stirred up debate as think-tank group The Heritage Foundation believes the prince had been treated differently to ordinary citizens.

The lawsuit launched by the foundation, which wanted to force the publication of the duke’s visa documents, was terminated in September.

Now, the return of Trump to the White House may make things difficult for the Duke of Sussex, should the Heritage Foundation try again to establish again what Harry wrote on his visa documents. The President-elect has previously spoken about his dislike for the 40-year-old duke and his wife, 43, declaring he is not a “fan” of her. He also vowed not to protect Harry in his visa row and to take any “appropriate” action if the prince had not been truthful in his visa application.

Prince Harry is still facing visa rows (Image: Max Mumby/Indigo/Getty Images)

Now, Mike Howell, the director of the Oversight Project, the foundation’s investigative arm, has said the prince “needs to go”.

According to the Daily Mail, Howell said: “Markle can stay. He needs to go.”

Despite concerns for the prince, a friend of Prince Harry’s told The Daily Mail that the duke wants to stay in California, a place he now considers home. Since 2020, he has been living in a £11 million mansion in Montecito with his wife and their children Prince Archie, five, and Princess Lilibet, three.

The friend reportedly said: “Harry’s in California. It’s his home and where he expects to live indefinitely – with Meghan.

Donald Trump said he is not a “fan” of Meghan Markle (Image: Samir Hussein/Samir Hussein/WireImage)

“They are very happy in California. They are both focused on the work which they are doing here.”

Prince Harry and Meghan have not addressed Donald Trump’s victory in the election this week.

They also stayed away from making any political comments during this election campaign, following their remarks in 2020 where they urged voters not to “reject hate speech”.

Although they did not name Trump at the time, some commentators argued the comment may have been directed at the now-President-elect and in support of Joe Biden.