Sarah Vine echoed Ms Griffiths’ comments, calling the trip a tour royal in all but name.
The Mail columnist claimed the couple “eat and ate their cake” by picking and choosing their quasi-royal duties.
Duncan Larcombe, a biographer of Harry, said the visit is a “calculated provocation on their part”.
He told the Daily Beast: “To the casual observer, especially abroad and even more so in America, this will look like Harry and Meghan are going back to doing royal jobs, especially considering that one of the gigs Harry is doing the WellChild awards are for sick kids, which he always did when he was a royal.
“It will be incredibly high-profile.