FILE - In this Feb. 2, 1979 file photo, an aide helps Chinese former leader Deng Xiaoping try on a cowboy hat presented to him at a rodeo in Simonton, Texas. One wore a cowboy hat. Another visited Disneyland and Hollywood. Chinese President Xi Jinping’s trip to the U.S. this week is the latest in a string of visits made over the years by China’s leaders since formal diplomatic relations were established between Washington and Beijing in 1979. (AP Photo, File)