To answer your question, no.
But at the same time, irrelevant.
They are private citizens and they no longer work for the Royal Family.
They and/or their charities have gotten tens of millions in federal taxpayers dollars.
Harry may be here on a visa that allows the Harkles to dodge US income taxes.
They both support stifling free speech, and Markle’s handbag thinks the 1rst Amendment is “bonkers”.
I’d say that there are many reason to be interested in the Harkles.
At least two Deep States are.