He’s also visited with a lot of important people.
Charles and Obama’s conversation included some friendly banter.
Everybody’s so friendly" (viaCBS News).

The men laughed and Charles said, “That’s awfully nice to know.”
With a smile, Charles replied, “I don’t believe that.”
Charles also talked about enjoying his visit to Mount Vernon, a monument he had visited in the ’70s.

During Charles' 2011 visit to the U.S., the men were photographed in the same spot.
During a speech, Queen Elizabeth welcomed them and mentioned their first meeting in 2009.
To the Queen" (viaObama White House).

Obama shared nothing but praise for Queen Elizabeth after her death.