FILE - In this June 29, 2019, file photo, U.S. President Donald Trump, left, shakes hands with Chinese President Xi Jinping during a meeting on the sidelines of the G-20 summit in Osaka, western Japan. Facing another U.S. tariff hike, Xi is getting tougher with Washington instead of backing down. Both sides have incentives to settle a trade war that is battering exporters on either side of the Pacific and threatening to tip the global economy into recession. (AP Photo/Susan Walsh, File)