Police Magazine Logo
MenuMENU
SearchSEARCH

Combating Human Smuggling

A storm-water channel connecting the higher-elevation Nogales, Sonora, brings runoff into Nogales, Ariz., and can also deliver illegal immigrants willing to risk drowning when the waters rise.

Combating Human Smuggling

Smugglers use vehicle "traps" to transport undocumented aliens. Photo courtesy of FBI.

3 min to read


A storm-water channel connecting the higher-elevation Nogales, Sonora, brings runoff into Nogales, Ariz., and can also deliver illegal immigrants willing to risk drowning when the waters rise.

That's not the only way people come over the border. The easiest is through the fence. The border fence is made of 25-foot-high steel girders and it snakes off into the distance on the hilly outskirts of Nogales (Ariz.). But it's little hindrance to determined smugglers. Border Patrol agents refer to it as a "30-second delay."

Ad Loading...

As a local law enforcement agency, the Nogales PD defers to Border Patrol agents to perform the primary security duties at checkpoints such as vehicle searches and ID checks.

Yet, the department has secured manpower funding via Operation StoneGarden, a Department of Homeland Security program with the stated goal of improving coordination among local, state, and federal law enforcement agencies to secure the border and cut down on human smuggling.

StoneGarden allows Nogales officers to work border checkpoints alongside U.S. Customs and Border Protection agents and enables overtime pay for fence-line patrols.

On a recent shift, Officer Mario Lopez checked bags and IDs of pedestrians leaving the U.S. for Mexico at one of two entry points in town. State-issued IDs or passports are permitted. Travelers who present a Mexican matricula consular (voter credential) are turned away.

Lopez supports S.B. 1070, Arizona's tough immigration law that's been struck down by a federal judge and has come under fire by the Obama administration. He favors the law because he believes it may spur further federal support for law enforcement.

Ad Loading...

"It's a decent law," Lopez says. "However, I do have some reservations that it's just adding to our workload. Hopefully, this will make President Obama take some action."

The officer also commented on the public outcry to the law that may be an overreaction.

"We don't just walk up and start nabbing people," Lopez adds. "We have to establish the fact that the person is illegal."

Nearby, fellow Nogales officer Robert Fierros checks outbound vehicles passing through the checkpoint to mostly look for large quantities of cash, guns, ammunition, stolen vehicles, felons, and other wanted persons. On federal property, no probable cause is needed; Fierros can stop any vehicle for any reason.

Earlier in the year, Fierros stopped a vehicle with a 20-year-old male driver and a 16-year-old female passenger. The male was a wanted felon who had abducted the teen and was attempting to smuggle her to Mexico for sex slavery.

Ad Loading...

The girl looked frightened and the man's ID contained a fake address in Arizona. And their boyfriend-girlfriend story quickly fell apart under further questioning.

"StoneGarden allows municipal officers to network with federal officers," Fierros says. "You're joining powers, and it really does show results."                                          

Related Articles:

Patrolling the Broken Border

Hidden Drugs In Vehicle 'Traps'

Subscribe to our newsletter

More Patrol

graphic honoring fallen law enforcement officers featuring a uniformed officer holding a folded American flag, with bold text reading “2026 Roll Call of Heroes” and “363 Fallen Officers Honored,” alongside the National Law Enforcement Officers Memorial Fund logo.
PatrolMay 14, 2026

363 Fallen Officers Honored During National Police Week

In case you missed NELOMF’s annual Candlelight Vigil, here are all 363 names of the fallen officers whose names were added to the National Law Enforcement Officers Memorial this year.

Read More →
Graphic honoring New York City Police Department officers as “Officer of the Month” for March 2026. The image features portraits of Chief Aaron Edwards and Sergeant Luis Navarro alongside department and recognition text.
PatrolMay 14, 2026

NYPD Officers Who Responded Quickly During IED Incident Recognized as NLEOMF Officers of the Month

Chief Aaron Edwards and Sgt. Luis Navarro were recognized by NLEOMF as Officers of the Month for their response during an IED incident and their actions that helped prevent harm to the public.

Read More →
Infographic summarizing results from a national survey on policing reputation. Ten key findings cover public trust, communication, demographics, media influence, local policing, AI concerns, and emergency response, using charts, icons, and statistics throughout.
PatrolMay 14, 2026

National Police Survey Reveals How Americans View Policing Today

A new national survey offers a comprehensive look at how Americans view policing. The study uncovers public sentiment toward local vs. federal police, communications, crisis response, the use of AI in policing, and more.

Read More →
Ad Loading...
Product image of a Streamlight TLR-7 X tactical flashlight on a dark background. The compact black weapon-mounted light is shown in close-up beneath the Streamlight logo, highlighting its lens, controls, and mounting hardware.
PatrolMay 14, 2026

Streamlight TLR-7 X Selected as Standard Issue Pistol Light by Canadian Federal Police

The Canadian Federal Police will be adding a new duty pistol system, which will include Streamlight’s TLR-7 X and a Glock 45 MOS 7 pistol with a red dot sight.

Read More →
poeple dressed in dark clothing holding candles during a candlelight vigil.
PatrolMay 8, 2026

Fallen Law Enforcement Officers from Across the Country to be Honored During 38th Annual Candlelight Vigil on May 13th in Washington, D.C.

The National Law Enforcement Officers Memorial Fund (NLEOMF) will honor 363 fallen officers who have died in the line of duty as their names are added to the National Law Enforcement Officers Memorial during the annual Candlelight Vigil on May 13.

Read More →
Black small medical bag with supplies and a tourniquet at right on a wood table and a large headline at left What Should Be In Your IFAK?
Patrolby Wayne ParhamMay 1, 2026

What Should Be in Your IFAK?

What should every officer include in an IFAK? Sydney Vail, M.D., a veteran trauma surgeon and former SWAT surgeon, explains which components are needed and which are not, and stresses training.

Read More →
Ad Loading...
flashlight turn un and submerged in puddle with rain falling.
PatrolApril 30, 2026

Olight Releases 2 New Baton Variants & the ArkPro Ultra Onyx Black

Olight has added two new lights to the Baton Series, the Baton 4 and the Baton Ultra. One new Baton features up to 1,600 lumens on turbo, and the other 1,800.

Read More →
Black tactical helmet with bright explosion behind it to the left, Team Wendy logo top right, and headline Recon Tactical Bump Helmet
PatrolApril 30, 2026

Team Wendy Reveals New RECON Tactical Bump Helmet

Team Wendy’s new RECON Tactical bump helmet is configurable by color, retention, and accessories for rescue, tactical, and military mission needs. It features Zorbium foam pads, shell vents, and lattice cooling pads that balance impact absorption, airflow, and long-wear support.

Read More →
Black military style leather boot against a blue cobblestone background with a white Garmont Tactical logo.
PatrolApril 30, 2026

Garmont Tactical Introduces the T8 Specter LE Zip for LE Professionals

Garmont Tactical has a new 8-inch duty boot with a side zipper, the T8 Specter LE Zip. The boot is available now and features ankle support in a standard duty profile with polishable leather.

Read More →
Ad Loading...
Streamlight searchlight and a scene light on a tripod set against a darkened street scene and Streamlight logo across the top.
PatrolApril 30, 2026

Streamlight Launches LiteBox 1Million & Portable Scene Light III

Streamlight has launched the Portable Scene Light III (PSL III), which delivers up to 10,000 lumens, and the LiteBox 1Million, a one-million-candela long-range search light.

Read More →