The US tax dilemma facing Meghan, Harry and the royal baby

Britain's Prince Harry, Duke of Sussex, (L) and Britain's Meghan, Duchess of Sussex (R) attend a reception to mark the 50th Anniversary of the investiture of The Prince of Wales at Buckingham Palace in London on March 5, 2019. - The Queen hosted a reception to mark the Fiftieth Anniversary of the investiture of Britain's Prince Charles, her son, as the Prince of Wales. Prince Charles was created The Prince of Wales aged 9 on July 26th 1958 and was formally invested with the title by Her Majesty The Queen on July 1st 1969 at Caernarfon Castle.

JOHANNESBURG, SOUTH AFRICA - OCTOBER 02: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex attend a Creative Industries and Business Reception on October 02, 2019 in Johannesburg, South Africa. (Photo by Chris Jackson/Getty Images)

Britain's Prince William, Duke of Cambridge reacts to a question from the media as he leaves after a visit to School21 following its re-opening after the easing of coronavirus lockdown restrictions in east London on March 11, 2021. - The visit coincides with the roll-out of Mentally Healthy Schools resources for secondary schools and how this is helping put mental health at the heart of their schools curriculum. (Photo by JUSTIN TALLIS / various sources / AFP) (Photo by JUSTIN TALLIS/AFP via Getty Images)

LONDON, ENGLAND - OCTOBER 14: Labour Party Shadow Home Sedretary Diane Abbott walks through the Central Lobby back to the House of Commons after the Queen's Speech during the State Opening of Parliament at the Palace of Westminster on October 14, 2019 in London, England. The Queen's speech is expected to announce plans to end the free movement of EU citizens to the UK after Brexit, new laws on crime, health and the environment. (Photo by Daniel Leal-Olivas - WPA Pool / Getty Images)

UNSPECIFIED - UNSPECIFIED: In this handout image provided by Harpo Productions and released on March 5, 2021, Oprah Winfrey interviews Prince Harry and Meghan Markle on A CBS Primetime Special premiering on CBS on March 7, 2021. (Photo by Harpo Productions/Joe Pugliese via Getty Images)

LONDON, ENGLAND - MARCH 09: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex meets children as she attends the Commonwealth Day Service 2020 on March 09, 2020 in London, England. (Photo by Chris Jackson/Getty Images)

Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex depart Canada House on January 07, 2020 in London, England.