August 25, 2010
President Obama called the Prime Minister earlier today to offer his congratulations to the Prime Minister and Mrs. Cameron on the birth of their daughter. The President and Prime Minister also took the opportunity to compare notes on the Middle East.
Barack Obama, Readout of President Obama's Call with British Prime Minister Cameron Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/289423