PRINCE Harry’s US visa could be under scrutiny after he admitted using drugs, a lawyer has claimed.

The Duke of Sussex detailed his past drug use in his bombshell book Spare as well as in several TV interviews.

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In his memoir, Harry admits he regularly smoked cannabis and misused alcohol as a teenager.

And in a TV interview, he admitted using Class A ayahuasca, a high from Amazon rainforest vines, to help him cope with the trauma of his mum Princess Diana’s 1997 death.

Now legal experts have claimed his admission could put him in hot water with US immigration.

Former federal prosecutor Neama Rahmani told Page Six: “An admission of drug use is usually grounds for inadmissibility.

“That means Prince Harry’s visa should have been denied or revoked because he admitted to using cocaine, mushrooms and other drugs.”

She added that there is “no exception for royalty or recreational use.”

However, Immigration expert Attorney James Leonard, disagrees, saying Harry is “clearly not” a “habitual drug user” currently.

In his book Harry wrote: “Of course I had been doing cocaine around this time.

“At someone’s country house during a hunting weekend, I’d been offered a line, and I’d done a few more since.

“It wasn’t much fun, and it didn’t make me particularly happy, as it seemed to make everyone around me.

“But it did make me feel different, and that was the main goal. Feel. Different.

“I was a deeply unhappy 17-year-old willing to try almost anything that would alter the status quo. That was what I told myself anyway.”

He goes on to describe his experiences under the effects of magic mushrooms.

Harry described how his pals went to the fridge for a drink, writing: “While the door was open, we spotted a huge box of black diamond mushroom chocolates.

“Someone behind me said they were for everybody. Help yourself, boys.

“My mate and I grabbed several, gobbled them, washed them down with tequila.”

But it soon turned into a nightmare as he began hallucinating in a bathroom.

Harry said: “Beside the toilet was a round silver bin, the kind with a foot pedal to open the lid. I stared at the bin. It stared back. Then it became . . . a head.

“I stepped on the pedal and the head opened its mouth. A huge open grin.

“I laughed, turned away, took a p***. Now the loo became a head too. The bowl was its gaping maw, the hinges of the seat were its piercing silver eyes. It said, ‘Aaah’.”