A license plate reader used by U.S. Border Patrol is hidden in a sand crash barrel along the state Highway 80, Thursday, Oct. 23, 2025, in Douglas, Ariz. (AP Photo/Ross D. Franklin)
A license plate reader used by U.S. Border Patrol is hidden in a sand crash barrel along the state Highway 80, Thursday, Oct. 23, 2025, in Douglas, Ariz. (AP Photo/Ross D. Franklin)
Today, the deserts, forests and mountains of the nation’s land borders are dotted with checkpoints and increasingly, surveillance towers, Predator drones, thermal cameras and license plate readers, both covert and overt.
Border Patrol’s parent agency got authorization to run a domestic license plate reader program in 2017, according to a Department of Homeland Security policy document. At the time, the agency said that it might use hidden license plate readers ”for a set period of time while CBP is conducting an investigation of an area of interest or smuggling route. Once the investigation is complete, or the illicit activity has stopped in that area, the covert cameras are removed,” the document states.
But that’s not how the program has operated in practice, according to interviews, police reports and court documents. License plate readers have become a major — and in some places permanent — fixture of the border region.
In a budget request to Congress in fiscal year 2024, CBP said that its Conveyance Monitoring and Predictive Recognition System, or CMPRS, “collects license plate images and matches the processed images against established hot lists to assist … in identifying travel patterns indicative of illegal border related activities.” Several new developer jobs have been posted seeking applicants to help modernize its license plate surveillance system in recent months. Numerous Border Patrol sectors now have special intelligence units that can analyze license plate reader data, and tie commercial license plate readers to its national network, according to documents and interviews.
Border Patrol worked with other law enforcement agencies in Southern California about a decade ago to develop pattern recognition, said a former CBP official who spoke on the condition of anonymity for fear of reprisal. Over time, the agency learned to develop what it calls “patterns of life” of vehicle movements by sifting through the license plate data and determining “abnormal” routes, evaluating if drivers were purposely avoiding official checkpoints. Some cameras can take photos of a vehicle’s plates as well as its driver’s face, the official said.
Another former Border Patrol official compared it to a more technologically sophisticated version of what agents used to do in the field — develop hunches based on experience about which vehicles or routes smugglers might use, find a legal basis for the stop like speeding and pull drivers over for questioning.
The cameras take pictures of vehicle license plates. Then, the photos are “read” by the system, which automatically detects and distills the images into numbers and letters, tied to a geographic location, former CBP officials said. The AP could not determine how precisely the system’s algorithm defines a quick turnaround or an odd route. Over time, the agency has amassed databases replete with images of license plates, and the system’s algorithm can flag an unusual “pattern of life” for human inspection.
The Border Patrol also has access to a nationwide network of plate readers run by the Drug Enforcement Administration, documents show, and was authorized in 2020 to access license plate reader systems sold by private companies. In documents obtained by the AP, a Border Patrol official boasted about being able to see that a vehicle that had traveled to “Dallas, Little Rock, Arkansas and Atlanta” before ending up south of San Antonio.
Documents show that Border Patrol or CBP has in the past had access to data from at least three private sector vendors: Rekor, Vigilant Solutions and Flock Safety.
Through Flock alone, Border Patrol for a time had access to at least 1,600 license plate readers across 22 states, and some counties have reported looking up license plates on behalf of CBP even in states like California and Illinois that ban sharing data with federal immigration authorities, according to an AP analysis of police disclosures. A Flock spokesperson told AP the company “for now” had paused its pilot programs with CBP and a separate DHS agency, Homeland Security Investigations, and declined to discuss the type or volume of data shared with either federal agency, other than to say agencies could search for vehicles wanted in conjunction with a crime. No agencies currently list Border Patrol as receiving Flock data. Vigilant and Rekor did not respond to requests for comment.
Across five Republican and Democratic administrations, the U.S. government has repeatedly allowed and even actively helped American firms to sell technology to Chinese police.
Where Border Patrol places its cameras is a closely guarded secret. However, through public records requests, the AP obtained dozens of permits the agency filed with Arizona and Michigan for permission to place cameras on state-owned land. The permits show the agency frequently disguises its cameras by concealing them in traffic equipment like the yellow and orange barrels that dot American roadways, or by labeling them as jobsite equipment. An AP photographer in October visited the locations identified in more than two dozen permit applications in Arizona, finding that most of the Border Patrol’s hidden equipment remains in place today. Spokespeople for the Arizona and Michigan departments of transportation said they approve permits based on whether they follow state and federal rules and are not privy to details on how license plate readers are used.
Texas, California, and other border states did not provide documents in response to the AP’s public records requests.
CBP’s attorneys and personnel instructed local cities and counties in both Arizona and Texas to withhold records from the AP that might have revealed details about the program’s operations, even though they were requested under state open records laws, according to emails and legal briefs filed with state governments. For example, CBP claimed records requested by the AP in Texas “would permit private citizens to anticipate weaknesses in a police department, avoid detection, jeopardize officer safety, and generally undermine police efforts.” Michigan redacted the exact locations of Border Patrol equipment, but the AP was able to determine general locations from the name of the county.
One page of the group chats obtained by the AP shows that a participant enabled WhatsApp’s disappearing messages feature to ensure communications were deleted automatically.
Transformation of CBP into intelligence agency
The Border Patrol’s license plate reader program is just one part of a steady transformation of its parent agency, CBP, in the years since 9/11 into an intelligence operation whose reach extends far beyond borders, according to interviews with former officials.
CBP has quietly amassed access to far more information from ports of entry, airports and intelligence centers than other local, state and federal law enforcement agencies. And like a domestic spy agency, CBP has mostly hidden its role in the dissemination of intelligence on purely domestic travel through its use of whisper stops.
Border Patrol has also extended the reach of its license plate surveillance program by paying for local law enforcement to run plate readers on their behalf.
A federal grant program called Operation Stonegarden, which has existed in some form for nearly two decades, has handed out hundreds of millions of dollars to buy automated license plate readers, camera-equipped drones and other surveillance gear for local police and sheriffs agencies. Stonegarden grant funds also pay for local law enforcement overtime, which deputizes local officers to work on Border Patrol enforcement priorities. Under President Donald Trump, the Republican-led Congress this year allocated $450 million for Stonegarden to be handed out over the next four fiscal years. In the previous four fiscal years, the program gave out $342 million.
In Cochise County, Arizona, Sheriff Mark Dannels said Stonegarden grants, which have been used to buy plate readers and pay for overtime, have let his deputies merge their mission with Border Patrol’s to prioritize border security.
“If we’re sharing our authorities, we can put some consequences behind, or deterrence behind, ‘Don’t come here,’” he said.
In 2021, the Ward County, Texas, sheriff sought grant funding from DHS to buy a “covert, mobile, License Plate Reader” to pipe data to Border Patrol’s Big Bend Sector Intelligence Unit. The sheriff’s department did not respond to a request for comment.
Other documents AP obtained show that Border Patrol connects locally owned and operated license plate readers bought through Stonegarden grants to its computer systems, vastly increasing the federal agency’s surveillance network.
How many people have been caught up in the Border Patrol’s dragnet is unknown. One former Border Patrol agent who worked on the license plate reader pattern detection program in California said the program had an 85% success rate of discovering contraband once he learned to identify patterns that looked suspicious. But another former official in a different Border Patrol sector said he was unaware of successful interdictions based solely on license plate patterns.
In Trump’s second term, Border Patrol has extended its reach and power as border crossings have slowed to historic lows and freed up agents for operations in the heartland. Border Patrol Sector Chief Gregory Bovino, for example, was tapped to direct hundreds of agents from multiple DHS agencies in the administration’s immigration sweeps across Los Angeles, more than 150 miles (241 kilometers) from his office in El Centro, California. Bovino later was elevated to lead the aggressive immigration crackdown in Chicago. Numerous Border Patrol officials have also been tapped to replace ICE leadership.
The result has been more encounters between the agency and the general public than ever before.
“We took Alek’s case because it was a clear-cut example of an unconstitutional traffic stop,” said Christie Hebert, who works at the nonprofit public interest law firm Institute for Justice and represents Schott. ”What we found was something much larger — a system of mass surveillance that threatens people’s freedom of movement.”
AP found numerous other examples similar to what Schott and the delivery driver experienced in reviewing court records in border communities and along known smuggling routes in Texas and California. Several police reports and court records the AP examined cite “suspicious” travel patterns or vague tipoffs from the Border Patrol or other unnamed law enforcement agencies. In another federal court document filed in California, a Border Patrol agent acknowledged “conducting targeted analysis on vehicles exhibiting suspicious travel patterns” as the reason he singled out a Nissan Altima traveling near San Diego.
In cases reviewed by the AP, local law enforcement sometimes tried to conceal the role the Border Patrol plays in passing along intelligence. Babb, the deputy who stopped Schott, testified he typically uses the phrase “subsequent to prior knowledge” when describing whisper stops in his police reports to acknowledge that the tip came from another law enforcement agency without revealing too much in written documents he writes memorializing motorist encounters.
Once they pull over a vehicle deemed suspicious, officers often aggressively question drivers about their travels, their belongings, their jobs, how they know the passengers in the car, and much more, police records and bodyworn camera footage obtained by the AP show. One Texas officer demanded details from a man about where he met his current sexual partner. Often drivers, such as the one working for the South Carolina moving company, were arrested on suspicion of money laundering merely for carrying a few thousand dollars worth of cash, with no apparent connection to illegal activity. Prosecutors filed lawsuits to try to seize money or vehicles on the suspicion they were linked to trafficking.
Schott warns that for every success story touted by Border Patrol, there are far more innocent people who don’t realize they’ve become ensnared in a technology-driven enforcement operation.
“I assume for every one person like me, who’s actually standing up, there’s a thousand people who just don’t have the means or the time or, you know, they just leave frustrated and angry. They don’t have the ability to move forward and hold anyone accountable,” Schott said. “I think there’s thousands of people getting treated this way.”