A 32-year-old Chinese national and former postdoctoral researcher at Indiana University Bloomington has been sentenced for smuggling biological materials into the United States. Youhuang Xiang pleaded guilty to charges involving the illegal importation of E. coli DNA, which he concealed in shipments mislabeled as women’s underwear.
On April 10, 2026, a federal judge sentenced Xiang to over four months in prison, a $500 fine, and one year of supervised release. Since he was already in custody, the sentence counts as time served, and the court issued a judicial order for his immediate deportation to China.
Federal authorities launched an investigation after Xiang received a suspicious package at his Bloomington residence in March 2024. During an interview with Customs and Border Protection at Chicago’s O’Hare International Airport in November 2025, Xiang initially denied the allegations.
He subsequently admitted that the shipping manifest was intentionally falsified to bypass U.S. laws and federal safety regulations. Xiang, who holds a Ph.D. from the Chinese Academy of Sciences, entered the U.S. on a J-1 visa in 2023 for research in IU’s biology department.
His visa was terminated immediately following his confession to federal investigators. The Department of Justice confirmed that the smuggling violated import rules established to protect public health and national safety.
E. coli plasmid DNA is a common tool for gene research, yet the illicit method of entry has sparked concerns about potential misuse. The Trump administration remains focused on tightening the vetting processes for foreign researchers working on sensitive biological projects at American universities.
Security analysts suggest this case underscores the risks associated with the movement of biological materials across international borders without proper oversight. Indiana University has emphasized its cooperation with federal authorities as it reviews its vetting procedures for international visiting scholars.
Xiang remains in federal custody pending his scheduled removal to China under the terms of his plea agreement.