New submitter Eunuchswear writes "Congress has passed laws forbidding NASA from allowing Chinese nationals on its premises, so NASA was forced to reject applications from Chinese scientists to attend the upcoming meeting on the Kepler space telescope next month. This ban extends even to Chinese scientists and students working in the USA, angering many American scientists. Geoff Marcy, known for his work on exoplanets, is reported to be boycotting the conference. 'In good conscience, I cannot attend a meeting that discriminates in this way. The meeting is about planets located trillions of miles away, with no national security implications.' he said in an email to the conference organisers."