Li Chen and Yu Zhou swore an oath of allegiance to the United States, became naturalized citizens, and then immediately got to work stealing American medical technology and handing it to the Chinese government. A federal judge just took their citizenship back. All of it. Gone.
Both of them literally raised their right hands, pledged to “support and defend the Constitution against all enemies, foreign and domestic,” and then went “home” to package up trade secrets for the Chinese Communist Party.
Here’s the story. Chen came to the US on an H-1B visa in 2007 and got her green card in 2011. Zhou arrived as an exchange visitor in 2005, switched to an H-1B in 2008. Both worked as research scientists at Nationwide Children’s Hospital in Ohio. Chen naturalized in 2016. Zhou in 2017. They were living the American dream — good jobs, citizenship, the whole package.
One problem. They were stealing the whole time.
The couple stole proprietary exosome isolation technology — cutting-edge medical research that Nationwide Children’s Hospital had developed. They didn’t just peek at the files. They took the intellectual property, set up their own company using the stolen tech, and acquired shares in another company that was also using it. Total transactions from the IP theft: approximately $1.5 million.
Oh, and they were getting funded by China’s State Administration of Foreign Expert Affairs. So the Chinese government was literally bankrolling American citizens to steal American technology from an American hospital. Subtle.
Chen got 30 months in federal prison plus three years of supervised release. Zhou got 33 months plus three years supervised release. The court ordered them to pay $2.6 million in restitution — jointly and severally, for the lawyers in the audience.
But here’s the real victory. Judge James E. Simmons Jr. of the US District Court for the Southern District of California didn’t just sentence them. He revoked their citizenship on March 30, 2026. Denaturalized them. The court found they were ineligible to naturalize in the first place because of crimes involving “moral turpitude” — which is legal language for “you were criminals when you took the oath and you knew it.”
Attorney General Pam Bondi’s office put out a statement on the case. So did Assistant Attorney General Brett Shumate from the Civil Division. The message from DOJ was clear: this is the template going forward.
That’s the part Beijing should be paying attention to. Prison sentences end. Thirty months goes by fast. But denaturalization? That’s permanent. Once the citizenship is gone, Chen and Zhou are foreign nationals with espionage convictions sitting on American soil. When their time is up, they’re on a plane. And burned Chinese assets don’t exactly get a hero’s welcome back in Beijing.
The FBI has said publicly that China is running the largest espionage operation against the United States in history. Not “one of the largest.” The largest. There are dozens of active investigations involving naturalized citizens with ties to Chinese intelligence. Every single one of those operatives just watched Li Chen and Yu Zhou lose everything — the citizenship, the freedom, and the future.
Steal from America, and America takes it all back. The passport included.
