Prince Harry wrote about using marijuana, cocaine and psychedelic mushrooms in his bestselling memoir Spare, leading to questions about what he disclosed on his US visa application.

A royal commentator has warned things could be ‘very different’ for Harry if Donald Trump is re-elected. (Image: Getty)

Prince Harry and Meghan Markle may target a move to Canada if they’re forced to leave the US over the Duke’s ongoing visa row, a royal commentator has claimed.

Harry publicly admitted past drug use in his January 2023 tell-all memoir Spare, and it has led to questions over whether this was admitted on his American visa application.

Speaking to OK!, former BBC royal correspondent Jennie Bond said the Prince “must regret having been so frank about drugs in his book. It really wasn’t a necessary part of the narrative although I understand that he was trying to explain his mental health issues.”

“But admissions like that can have consequences and, right now, he must be feeling the heat,” she added.

“I think he’s fine as long as the Biden administration continues to back him. But things could be very different if [Donald] Trump became president again.

The pair have relocated to California since stepping down as senior royals in 2020. (Image: Getty)

But she said she ultimately couldn’t imagine the US throwing out the royal. “Lawyers would find some way around it, I think,” she said. “But it must be an unnecessary worry and embarrassment for Harry at the moment.”

“I suppose if the worst came to the worst, they would have to find somewhere else to live but I doubt that it would be the UK,” Bond added. “Perhaps Canada would look kindly on them. But I don’t think it will come to that.”

Last year, the conservative think tank Heritage Foundation launched a lawsuit demanding the Joe Biden administration make Harry’s US visa documents public, to show whether past drug use was disclosed.

It came after the Prince wrote about using marijuana, cocaine and psychedelic mushrooms in his bestselling memoir.

Illicit drug use can result in non-immigrant and immigrant visa applications being rejected, though immigration officers can use discretion to make a final decision, taking into account several factors.

The Duke and Duchess visited Nigeria last month in their first major overseas trip. (Image: Getty)

A judge in the US is currently reviewing the case, and a decision may take weeks.

The Department of Homeland Security has argued that this information should remain confidential and said it will not be released while President Biden is in office.

United States Ambassador to the United Kingdom Jane Hartley has insisted that the current president would under no circumstances deport the Duke.

However, a former staffer in the administration of Trump, who will face US President Joe Biden in November’s general election, has claimed Harry would not receive favourable treatment should their ex-boss regain the White House.

The Sussexes relocated to California with their children Lilibet and Archie after stepping down as senior royals in January 2020.