Senior Multimedia Reporter
radhica.sookraj@guardian.co.tt
Across the deserts, canyons and mountains dividing the United States and Mexico, migrants continue to risk their lives for the chance of a better future in North America.
Some spend months working in Trinidad and Tobago before paying Mexican cartels between US$4,000 and US$12,000 to smuggle them across the border.
But after the Joe Biden administration tightened regional migration policies in 2024—and US President Donald Trump later declared a national emergency at the border, boosting enforcement and restricting asylum access—illegal crossings dropped sharply as much as 99 per cent.
Now, US authorities say the crackdown is fuelling a new threat- a rise in cocaine trafficking as cartels adapt to tougher border controls and intensified fentanyl enforcement.
During a high-level reporting tour hosted by the US Department of State Foreign Press Centre and attended by journalists from 13 countries, including T&T, officials warned that criminal networks are constantly evolving—shifting routes, changing tactics and finding new ways to profit from desperation on both sides of the border.
Nogales, Arizona &
San Diego, California
At ports of entry stretching from Arizona to California, US officials said criminal organisations are rapidly changing tactics, using drones, tunnels, hidden vehicle compartments and sophisticated surveillance systems to move narcotics northward while continuing to exploit vulnerable migrants desperate for a better life.
“Straight up, narco. That’s the biggest threat that we see here,” said Sidney Aki, director of Field Operations for the San Diego Field Office of US Customs and Border Protection (CBP) during a tour last week. In California, the effects of the fentanyl crisis were visible on city streets, where people appeared trapped in addiction, while across parts of Arizona, growing homelessness underscored the wider social and economic pressures facing border communities.
Aki said methamphetamine remains the most commonly seized narcotic in California, but cocaine trafficking has become increasingly prominent as authorities intensify efforts against fentanyl smuggling.
“About close to 60 per cent of all the narcotics seized by US Customs and Border Protection in the nation is seized here in California,” he said during a briefing at the San Ysidro Port of Entry, one of the busiest border crossings in the world.
Just one day earlier, officers intercepted 2,800 pounds of methamphetamine concealed inside flat-screen televisions aboard a tractor-trailer entering through Otay Mesa. He said as fentanyl enforcement intensified, cartels diversified supply chains and increased cocaine movement into the US market. Analysis of 2025 border data revealed that cocaine seizures at the US-Mexico border increased by about 35 per cent between 2024 and 2025.
But while narcotics seizures continue rising, officials say migrant encounters have fallen sharply compared with the unprecedented surges seen in recent years.
According to US Customs and Border Protection statistics, illegal crossings peaked in December 2023. Since January 2026, about 29,890 people have reportedly been apprehended at parts of the southern border compared with roughly 2.14 million encounters recorded throughout 2024.
Authorities caution, however, that “encounters” do not necessarily represent unique individuals, as some migrants repeatedly attempt crossings after deportation.
Even so, the reduction has been significant enough to alter cartel behaviour.
“Donald Trump came in promising a new approach to the border,” said CJ Karamargin, senior adviser to Republican Congressman Juan Ciscomani of Arizona’s 6th Congressional District.
“Just the promise of it was enough to change the behaviour of cartels. They knew that it wasn’t going to be easy any longer.”
Karamargin said migration routes shifted as security tightened.
“A porous border didn’t affect just a border community like ours,” he said. “Migrants would come in, usually not stay in Arizona … they would transit through Arizona, so it would have an impact in other states.”
Migrants fleeing crisis
Coordinator of the La Romain Migrant Support Group, Angie Ramnarine, in Trinidad and Tobago, said for migrants fleeing collapsing economies, violence or political instability, the risks remain immense.
She said nowhere is that more evident than in Venezuela’s ongoing economic collapse, which has driven millions from the country in search of a better life.
Ramnarine said that for some migrants from South America and the Caribbean, Trinidad and Tobago has become a temporary stop along the route north. She said prior to Trump’s second term as President, Venezuelans arrived through Trinidad’s porous maritime borders, finding short-term work before attempting the dangerous journey through Central America and Mexico.
Death, despair
in the desert
The US Border Patrol Tucson Sector utilises 3,000 agents to secure 262 miles of Arizona’s border by interdicting narcotics, preventing crossings and conducting life-saving desert rescues. But Supervisory Border Patrol Agent Jonathan Hulog, during a briefing near Nogales, Arizona, warned that those promises of safe crossings made by the cartel using social media often end in tragedy.
“Do not get fooled,” he said, warning that Arizona’s desert terrain is one of the deadliest sections of the border.
He said migrants crossing illegally face towering mountain ranges, deep canyons, flash floods and temperatures that can become fatal within hours.
“People attempting illegal entry often face only two outcomes—arrest and prosecution, or death,” he said.
He said migrants continue dying in Arizona’s deserts from dehydration, exposure and exhaustion, while others become trapped in drainage systems during monsoon flooding.
At the same time, smuggling organisations have become increasingly sophisticated.
“People facilitating crossings also use technology,” Hulog explained.
Cartels now deploy drones, GPS systems and encrypted communications to guide migrants through remote areas while avoiding detection from law enforcement.
He said the underground threat has also expanded.
Chief Patrol Agent Justin De La Torre from San Diego Sector Border Patrol said more than 200 tunnels have been discovered along the border over recent decades, including over 100 in the Nogales region alone.
Some tunnels contain reinforced structures, lighting and rail systems. Others are crude hand-dug passages connecting drainage systems or sewer networks beneath the border.
A partially constructed tunnel was discovered near Nogales only last month.
In San Diego alone, CBP processes roughly 250,000 people daily—about one quarter of all international travellers entering the United States through land borders.
“We believe in security or border security,” De La Torre said. “Because the more focused we are on security, the more efficient the flow of legitimate and lawful trade into the United States.”
He said technology now dominates much of that effort.
At ports of entry such as San Ysidro, authorities use facial biometrics, artificial intelligence, machine learning, licence plate readers, radio-frequency identification systems, non-intrusive X-ray scanners and canine detection teams to identify high-risk travellers and cargo.
Still, officials acknowledged the criminal organisations they face possess vastly greater financial resources.
“Our operating budget is only in the millions compared to the adversary in the billions,” said Deputy Agent in Charge Rich White.
White said Arizona’s Border Patrol sector operates with an annual budget of roughly US$24 million to US$25 million, most of which is consumed by basic operational costs, including vehicle maintenance and fuel.
“When you really think about how big we are and our mission set, a few million dollars for an operating budget is nothing,” he said.
By contrast, White said cartels can spend hundreds of millions on tunnels, communications systems, vehicles and surveillance technology.
The geography itself further complicates enforcement.
Arizona’s borderlands include remote wilderness, cliffs, canyons and mountains reaching elevations close to 10,000 feet.
“There are parts where you have to hike ten miles through a canyon just to get near the border,” White said.
“We literally don’t have enough to cover every square inch of every bit of the border at all times.”
Corruption also remains a risk as some US officers have previously been caught assisting smuggling operations, though he stressed those cases are aggressively investigated.
Throughout the tour, US officials sent a single message to migrants.
The border has become harder to cross, more heavily monitored and increasingly dangerous. The message? Do not attempt to cross.
