Federal grand juries in Milwaukee, Wisconsin, and Los Angeles, California, have indicted two foreign nationals on charges related to interstate stalking and conspiracy to procure sensitive U.S. military technology. The individuals named are Cui Guanghai from China and John Miller from the United Kingdom, who is also a lawful permanent resident of the U.S.
According to Deputy Attorney General Todd Blanche, “As alleged, the defendants targeted a U.S. resident for exercising his constitutional right to free speech and conspired to traffic sensitive American military technology to the Chinese regime.” He emphasized that such actions threaten national security and democratic values.
FBI Deputy Director Dan Bongino noted that the defendants allegedly harassed an individual critical of China’s government while attempting to export sensitive military technology. He praised the FBI’s efforts in halting these activities.
In Wisconsin, court documents reveal that starting November 2023, Cui and Miller attempted to procure defense articles like missiles and cryptographic devices for illegal export to China. They discussed methods of concealing these items for shipment via Hong Kong.
In California, beginning October 2023, Cui and Miller allegedly plotted against a victim opposing President Xi Jinping at an international summit. They reportedly directed surveillance activities against this individual with assistance from two people unknowingly working with the FBI.
The indictment states that similar harassment occurred in spring 2025 when new artistic statues depicting President Xi were planned for online display by the victim. Cui and Miller paid others—also FBI affiliates—to deter this action.
If convicted on all counts, both face substantial penalties: five years each for conspiracy and interstate stalking; twenty years under the Arms Export Control Act; ten years for smuggling violations.
The FBI leads investigations into these cases while coordinating extradition proceedings with Serbian authorities where Cui and Miller are located. Assistant U.S. Attorneys across districts along with Justice Department trial attorneys are prosecuting these matters.
An indictment represents allegations only; all defendants remain presumed innocent until proven guilty beyond reasonable doubt in court.
