There are dangerous signs from the U.S. to undermine the “One China” policy, says He Yafei. For the past 40 years, the two countries have managed the Taiwan issue well, but things are changing. The U.S. Congress has passed legislations such as the Taiwan Travel Act and the Defense Authorization Act that allow its higher-level officials to visit Taiwan and mutual port visits of each other’s warships. “The U.S. is pushing the envelope,” he asserts.