(Carolyn Kaster | AP file photo) In this Sept. 24, 2015, photo, Chinese President Xi Jinping and Vice President Joe Biden walk down the red carpet on the tarmac during an arrival ceremony in Andrews Air Force Base, Md. Chinese leaders hope Washington will tone down conflicts over trade, technology and security if Joe Biden wins the Nov. 3 presidential election. But any shift is likely to be in style, not substance, as frustration with Beijing increases across the American political spectrum.