The U.S. Attorney’s Office for the Southern District of Indiana announced on April 10 that Youhuang Xiang, a Chinese national and former postdoctoral researcher at Indiana University, was sentenced to more than four months in prison for smuggling E. coli DNA into the United States from China, concealed in a shipment of women’s underwear.
The case highlights concerns about foreign actors attempting to bypass inspections designed to protect public health and agricultural security. Authorities said Xiang exploited his access to laboratory facilities and a federally funded research grant while on a J-1 visa at Indiana University Bloomington.
According to the U.S. Attorney’s Office for the Southern District of Indiana press release, Xiang received a suspicious shipment in March 2024 at his Bloomington residence from Guangzhou Sci-Tech Innovation Trading that was declared as women’s underwear but contained E. coli bacterial DNA samples. He initially denied knowledge during a November 2025 interview with U.S. Customs and Border Protection officials at Chicago O’Hare International Airport, but admitted the manifest was intentionally mislabeled to circumvent U.S. law. The FBI Indianapolis Division investigation also revealed Xiang was a member of the Chinese Communist Party who concealed that affiliation from immigration authorities. The sentencing occurred on April 7, 2026, with a judicial order of removal.according to the U.S. Attorney’s Office for the Southern District of Indiana press release.
Xiang holds a Ph.D. from the Chinese Academy of Sciences and conducted postdoctoral research in the Department of Biology at Indiana University Bloomington on a J-1 visa beginning in June 2023. The FBI, U.S. Customs and Border Protection, and USDA Office of Inspector General jointly investigated the case after identifying suspicious shipments from China to individuals affiliated with the university. Xiang exploited access to laboratory facilities and a federally funded research grant from the USDA. The conviction demonstrates how foreign actors can attempt to bypass inspections required to safeguard public health and agricultural security.according to the same press release.
Roughly 123,000 Chinese graduate students are currently enrolled in U.S. universities. In a separate recent incident, a Chinese researcher at the University of Michigan died after falling from a campus building following questioning by U.S. law enforcement. University police are investigating the March 19 death as a possible act of self-harm. Federal authorities continue to monitor compliance with import regulations and visa conditions for individuals in sensitive research fields.as reported by CBS News.
The U.S. Attorney’s Office for the Southern District of Indiana prosecutes federal crimes within its jurisdiction and maintains a dedicated National Security Unit to address threats involving smuggling, export controls, and violations of immigration and customs laws. It works in partnership with the FBI, U.S. Customs and Border Protection, and the USDA Office of Inspector General to investigate cases that undermine border security and research integrity. The office has prioritized actions against foreign nationals who exploit academic and visa programs for illicit purposes.according to its official website.
