U.S. customs unlawfully canceled Harvard scientist Kseniia Petrova's visa after detaining her over biological samples, a federal judge ruled Tuesday,

A U.S. judge says the officer who canceled Harvard researcher Ksenia Petrova's visa didn't have the proper authority

U.S. customs unlawfully canceled Harvard scientist Kseniia Petrova's visa after detaining her over biological samples, a federal judge ruled Tuesday,