Source: US FBI
DETROIT – Chengxuan HAN, a citizen of the People’s Republic of China (PRC), pleaded today to three smuggling charges and to making false statements to U.S. Custom and Border Protection Officers, announced United States Attorney Jerome F. Gorgon, Jr.
Gorgon was joined in the announcement by Acting Special Agent in Charge Reuben Coleman, Federal Bureau of Investigation, Detroit Division, Director of Field Operations Marty C. Raybon, U.S. Customs and Border Protection and Jared Murphey, acting Special Agent in Charge, U.S. Immigration and Customs Enforcement’s Homeland Security Investigations (HSI), Detroit field office.
According to court documents, Han is a citizen of the PRC who is currently pursuing a Ph.D. from the College of Life Science and Technology in the Huazhong University of Science and Technology (HUST) in Wuhan, PRC. In 2024 and 2025, Han sent multiple packages to the United States from the PRC containing concealed biological material. These packages were addressed to individuals associated with a laboratory at the University of Michigan. On June 8, 2025, Han arrived at the Detroit Metropolitan Airport on a J1 visa. Customs and Border Protection officers conducted an inspection of Han, during which Han made false statements about the packages and the biological materials she had previously shipped to the United States. CBP officers also found that the content of Han’s electronic device had been deleted three days prior to her arrival in the United States. At the conclusion of the border inspection, Han was interviewed by agents from the Federal Bureau of Investigation and ICE HSI. During this interview, Han admitted to sending the packages, admitted that the packages contained biological material related to round worms, and admitted to making false statements to the CBP officers during her inspection.
Sentencing is scheduled for September 10, 2025. A conviction for smuggling goods into the United States carries a maximum penalty of 20 years in prison. A conviction for making false statements carries a maximum penalty of 5 years in prison.
United States Attorney Gorgon stated: “This alien from Wuhan, China smuggled round worms and other biomaterials into our country on three separate occasions to circumvent our border protections. One of those times, she wrote that she was sending ‘a fun letter.’ The University of Michigan invited this Chinese national into our state to be a visiting scholar where it was going to give her more than $41,000 in a year to do her worm research at the Life Sciences Institute. Something is wrong in Ann Arbor.”
“Protecting the American people from threats, whether domestic or foreign, remains at the core of the FBI’s mission,” said Reuben Coleman, Acting Special Agent in Charge of the FBI Detroit Field Office. “Anyone who attempts to smuggle biological materials into our country not only puts themselves at risk but also endangers public safety and our national security. The FBI will continue to work closely with our partners to safeguard our nation’s institutions and communities.”
“The guidelines for importing biological materials into the U.S. for research purposes are stringent, but clear, and actions like this undermine the legitimate work of other visiting scholars,” said Director of Field Operations Marty C. Raybon. “We will not tolerate the smuggling of regulated biological materials through our ports of entry, and this case is another example of our commitment—along with that of our law enforcement partners’—to protecting the homeland from any number of potential threats.”
“ICE HSI will not tolerate malicious foreign actors commandeering our educational institutions to further their schemes,” said ICE HSI Detroit acting Special Agent in Charge Jared Murphey. “As you can see, we are working across the spectrum of federal law enforcement to this end, and we will dedicate whatever resources necessary to secure the homeland.”
The FBI, CBP and ICE HSI investigated this case.