According to former federal prosecutor Neam Rahmani, “admission to drug use is usually the basis for visa denial.” Rahmani also clarifies that there are no exceptions even for members of the royal family.
Certainly, the publication quotes well-known New Jersey attorney James Leonard as saying that in the absence of any criminal drug or alcohol charges, or any judicial finding that the Prince Harry is a regular drug user, he sees no problem. with the disclosure in his memoirs of information about experiments with banned substances.
In short, adds Leonard, non-American drug addicts should give immigration authorities a reason to open a criminal investigation.