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FBI Director Kash Patel announced on Friday that a post-doctoral researcher in the U.S. on a visa was charged with allegedly smuggling Escherichia coli (E. coli) into the country and making false statements about it.
Patel identified the post-doctoral researcher as Youhuang Xiang, but did not name the university involved in the case.
“This is yet another example of a researcher from China, given the privilege to work at a U.S. university, who then allegedly chose to take part in a scheme to circumvent U.S. laws and receive biological materials hidden in a package originating from China,” Patel wrote on X.
“If not properly controlled, E. coli and other biological materials could inflict devastating disease to U.S. crops and cause significant financial loss to the U.S. economy,” he added.
Patel applauded the FBI Indianapolis and Chicago field offices for their work on the case and thanked U.S. Customs and Border Protection (CBP). The FBI director also sent a warning to universities, urging them to be “vigilant of this trend.”
“Ensure your researchers know that there is a correct and legal way to obtain a license to import/export approved biological materials, and it must be followed without exception,” Patel said.
This is not the first time visa holders have been busted for allegedly smuggling materials for research since the Trump administration began its immigration crackdown in January 2025.
This is a developing story. Please check back for updates.
