Inside a high-stakes US-China prisoner swap
The 27-year-old doctoral student had been trying for more than eight years to get his father, Kai Li, out of China, where he was imprisoned on espionage charges the U.S. government viewed as baseless. Around the same time, 6,500 miles away, Chinese officials showed up at 73-year-old Ayshem Mamut’s home in Xinjiang, to transport her…