(NewsNation) — Could Prince Harry be at risk of deportation from the United States?

The Heritage Foundation is suing the Department of Homeland Security in an attempt to prove Harry lied on his visa documents regarding his history of drug use after he said in his memoir “Spare” that he experimented with cocaine and psychedelic mushrooms.

Nile Gardiner, director of The Margaret Thatcher Center for Freedom, tells NewsNation the organization is taking action in an effort to access the royal’s visa documents because “no one should be above U.S. immigration law, and that includes Royals like Prince Harry.”

“We want to know whether or not Prince Harry was truthful and whether or not he lied. And also whether he received some kind of special preferential treatment by U.S. authorities. Everyone should be fully held to account,” Gardiner said on NewsNation’s “The Hill.”

The Duke of Sussex declared the United States his primary home for the first time, according to business filings for his travel company Travalyst on Wednesday. 

Harry and Meghan, Duchess of Sussex, have called California their home since 2020 after stepping away from their full-time positions in the royal family. The couple’s public grievances with the royal family, including allegations of racism and other mistreatments, have involved legal battles over royal privileges such as security details while visiting his home country. 

In March, a U.S. judge ordered the government to surrender Harry’s visa documents for the court’s consideration. Harry has admitted to experimenting with cocaine, cannabis, and psychedelic mushrooms, behavior he would have been required to disclose on application forms filed before he relocated to the United States in 2020.

The government warns immigrants that making misleading or false claims on government paperwork is grounds for deportation.

Clayton Vickers and NewsNation’s “The Hill” contributed to this report.