At its core though, U.S. officials said they saw the exchange as another chance to manage competition between the world's two largest economies, whose ties have been increasingly clouded by tensions over democratically governed Taiwan, which Xi has vowed to reunite with the mainland, by force if necessary.
Washington does not have official relations with Taiwan and follows a "one-China policy" that recognizes Beijing, not Taipei, diplomatically. But it is obliged by U.S. law to provide the island with the means to defend itself, and pressure has been mounting in Congress for more explicit support.
"This is about keeping the lines of communication open with the president of China, one of the most consequential bilateral relationships that we have, not just in that region, but around the world, because it touches so much," White House national security spokesman John Kirby told reporters ahead of the call.