A Customs and Border Protection supervisor assigned to the Maine-Canada border has been arrested and charged after FBI agents say he was caught on hidden camera tearing apart government computers, ripping out processors and memory, stuffing in cheaper parts, and plugging the machines back into CBP’s network.
Terry “Jiajia” Liu, 39, of Calais, Maine, described himself as a native of Guangzhou, China. He worked as a CBP supervisor at the Calais Port of Entry, with duties stretching to the Ferry Point and Milltown crossings.
CBP officers are required to be U.S. citizens. According to The Maine Wire, Liu has posted images suggesting he voted in 2020. That does not answer the question every American should be asking: how did a man from Guangzhou end up with after-hours access to Homeland Security computers on the northern border?
According to an FBI affidavit obtained by Steve Robinson at The Maine Wire, CBP IT staff discovered in late 2025 that computers at three Maine border facilities had been modified without authorization. The count grew to 46 machines: 38 in Calais, six at Ferry Point, two at Milltown.
Thirty-nine had their CPUs swapped. Six had RAM changed. Eight had hard drives replaced.
The original hardware included 14th-generation Intel Core i7 processors. What went back in were older, weaker chips, including Pentium-class parts that did not meet CBP specs. Many of those computers were then reconnected to the agency network.
Port Director Theodore Cummings had already told Liu in writing in March 2025: “Please do not move any computers or computer parts.” Stay in your lane. File a ticket. Liu allegedly kept going.
Hellbound and Down 