Prince Harry and Meghan Markle are more popular in the United States because they resonate over their dealing with 'modern issues that matter', a royal expert has said.
Clive Irving, royal author of The Last Queen, has said their popularity can be attributed to their relevance to modern issues and their commitment to making a positive impact.
He said: "Harry and Meghan are far more popular in America because they are a very modern couple and they deal with modern issues.
"Both of them are involved in issues that really matter, but Harry, in particular, pays a lot of attention to the care of former military people that have suffered from various stresses."
"He understands their struggles, and he wants to help them. I think that's why he's so popular in America," Mr Irving told the Express.
It comes as Prince Harry has been named as America's favourite royal beating King Charles who trails way down the list, according to a recent survey.
The survey asked 7,276 Americans across 36 states to pick their preferred member of the British royal family.
Prince Harry got 33.8 per cent of the votes. Harry also emerged as the most popular royal among all age demographics and genders, cementing his status as a firm favourite among Americans.
According to Irving, Harry and Meghan's combined popularity in America comes down to their willingness to tackle difficult subjects and speak out about things that matter.
"They're not afraid to use their platform to make a difference. And I think that's why so many people in America love them," he said.
Since stepping down from their royal duties in 2020 and relocating to California, the couple has been busy with various projects, including securing multi-million pound deals with Netflix and Spotify and launching their Archewell organization.
Through the charity, they are able to support a wide range of causes, including mental health, racial justice, and climate change.
Despite their departure from the royal family, Prince Harry and Meghan Markle continue to be in the spotlight, particularly in the United States where they have a growing fanbase.