President Barack Obama and first lady Michelle Obama welcomed the #RoyalBaby's arrival and wished Prince William and Duchess Kate "all the happiness and blessings parenthood brings."
"Michelle and I are so pleased to congratulate The Duke and Duchess of Cambridge on the joyous occasion of the birth of their first child," Obama said in a written statement issued by the White House.
"We wish them all the happiness and blessings parenthood brings," the president said. "The child enters the world at a time of promise and opportunity for our two nations. Given the special relationship between us, the American people are pleased to join with the people of the United Kingdom as they celebrate the birth of the young prince."
Congratulations to The Duke and Duchess of Cambridge on the birth of their son! Being a parent is the best job of all. -mo— FLOTUS (@FLOTUS) July 22, 2013