A look at the queen's history-making visits with American presidents

President Biden and first lady Jill Biden will share afternoon tea with Queen Elizabeth II at Windsor Castle on Sunday. But while that gathering will be a first for the first couple, the queen's encounters with American presidents and their wives is a piece of history all its own.

In her nearly 70-year reign, Queen Elizabeth may have met more U.S. presidents than anyone else alive today. Some were a bit out of order. She met the nation's 31st president, Herbert Hoover, at a 1957 luncheon — 24 years after he left office.