A University of Florida research employee and students have been implicated in an illegal, multi-million dollar scheme investigated by the Justice Department to fraudulently buy thousands of biochemical samples of dangerous drugs and toxins that were delivered to a campus laboratory then illicitly shipped to China over seven years, according to federal court records. Among the students tied to the scheme was the president of UF’s Chinese Students and Scholars Association. The group openly protested a Florida law signed by Gov. Ron DeSantis last year that limits universities from recruiting students and faculty from China — and bans employing such students from working in academic labs without special permission. That student, Nongnong “Leticia” Zheng, confirmed Friday in an interview that a federal prosecutor notified her last year in writing she was the target of a grand jury investigation, and the Justice Department was preparing to seek criminal charges against her. She said she has been assigned a federal public defender, Ryan Maguire of Tampa. She said government agents have threatened to imprison or deport her.