Alien from Wuhan, China Sentenced for Smuggling Biological Materials into the U.S. for Her Work at a University of Michigan Laboratory and For Lying About the Shipments

DETROIT - Chengxuan HAN, a citizen of the People's Republic of China (PRC), was sentenced today to time served (3 months) after having pleaded guilty 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 Matthew Stentz, 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.

United States Attorney Gorgon stated, "It is a privilege to study at one of our elite institutions. Aliens should not be abusing our hospitality by smuggling unknown biomaterials into America and then lying about it. The folks who keep us safe must know what aliens like the defendant are bringing into our country. And these convictions are a small but important step in that direction."

"Today's sentencing reinforces the FBI's unwavering commitment to protecting Americans from individuals who attempt to illegally import biological materials into our country," said Reuben Coleman, Acting Special Agent in Charge of the FBI Detroit Field Office. "I would like to thank the dedicated members of the FBI Detroit Field Office, alongside U.S. Customs and Border Protection and ICE HSI, who played a vital role in this investigation. I also send my sincerest appreciation to the U.S. Attorney's Office for the Eastern District of Michigan for their partnership in securing this successful prosecution. The FBI will remain steadfast in its mission to safeguard our nation and protect our communities from those who attempt to jeopardize the safety and security or the American people."

"While the criminal outcome could have been far worse for Ms. Han, she will be removed from the U.S. and barred from reentry as the result of her actions," said Director of Field Operations Marty C. Raybon. "This case serves as another example of the interagency effort put forth each day to protect our homeland from a growing number of threats from beyond our borders."

"Smuggling biological materials into the United States poses a serious threat, and HSI remains committed to work with our partners to investigate and disrupt such activities," said ICE HSI Detroit acting Special Agent in Charge Matthew Stentz. "This case highlights the importance of collaboration among federal agencies to protect our communities and uphold the rule of law."

The FBI, CBP and ICE HSI investigated this case.