Yunqing Jian, 33, first entered the country on a fraudulently obtained F1 student visa, the FBI says Fusarium graminearum creates "head blight," a disease of wheat, barley, maize and rice, and "is responsible for billions of dollars in economic losses worldwide each year," according to the Department of Justice. It is also toxic to humans, and can cause vomiting, liver damage and "reproductive defects in humans and livestock." The affidavit, which said Jian has been attempting to smuggle the pathogen into the U.S. since she began post-doctoral studies funded by China in 2022, also accuses Jian of asking a third...