President Trump recently announced a series of harsh measures against China, including the suspension of entry of all graduate and post-graduate students into the United States. I can understand the desire to protect American intellectual property by preventing students from learning skills and intellectual property and then returning to China and making use of them without royalties. But a blanket ban on the entry of Chinese students ignores how the fields of medicine, science, and engineering really work and is likely to backfire spectacularly.
