According to People, since Harry is a British citizen and Meghan is an American citizen, their children can obtain dual citizenship for the United States and the United Kingdom.
Their first child, Archie, was born in London in May 2019. And the U.S. Department of State’s Bureau of Consular Affairs website says that a child born abroad in wedlock to a U.S. citizen and a non-citizen after November 14, 1986, “acquires U.S. citizenship at birth if the U.S. citizen parent has been physically present in the United States or one of its outlying possessions prior to the person’s birth … for five years prior to the person’s birth, at least two of which were after the age of 14.”
Harry and Meghan’s second child, Lilibet, was born in Santa Barbara, Calif., in June 2021, and the UK government’s website notes that British citizenship is “normally automatically” passed down one generation to children born outside the country. “For example, you might automatically become a citizen if you’re born outside the UK to a British parent,” the site adds. “But your children will not automatically be citizens if they’re born outside the UK.”