From corn to Apple: The cases behind the U.S.-China standoff

FILE - In this Aug. 18, 2018, file photo, visitors look at a manufacturing robot from Chinese robot maker Aubo Robotics at the World Robot Conference in Beijing, China. China’s government has appealed to Washington to accept its industrial progress after U.S. intelligence officials said Beijing helps to steal and copy foreign technologies. (AP Photo/Mark Schiefelbein, File)

WASHINGTON — To hear the Americans tell it, the Chinese have gone on a commercial crime spree, pilfering trade secrets from seed corn to electronic brains behind wind turbines. China has stripped the arm off a T-Mobile robot, the U.S. says, and looted trade secrets about robotic cars from Apple.