The current border was originally decided after the Mexican–American War (1846–1848). Most of the border is settled on the Rio Grande River on the border of Texas and northeastern Mexico. To the left lies San Diego, California and on the right is Tijuana, Baja California. The building in the foreground on the San Diego side is a sewage treatment plant built to clean the Tijuana River.
A typical plaque constructed by the International Boundary and Water Commission and mounted at the exact location of the border.
United States Border Patrol at Algodones Sand Dunes, California, USA. The fence on the US-Mexican border is a special construction of narrow, 15 ft tall elements, that are movable vertically. This way, they can be lifted on top of the ever shifting sand dunes.
Map of Mexico in 1842
San Diego together with Tijuana creates the bi-national San Diego–Tijuana metropolitan area.
El Paso (top) and Ciudad Juárez, Chihuahua (bottom) seen from earth orbit; the Rio Grande is the thin line separating the two cities through the middle of the photograph. El Paso and Juarez make up the third largest U.S. international metroplex after Detroit–Windsor and San Diego-Tijuana.
Vehicle barrier in the New Mexico desert 2010
Climbing the Mexico–United States barrier fence in Brownsville, Texas
Going into Mexico from El Paso, Texas, U.S.
San Ysidro Port of Entry through vehicle.
The San Ysidro border crossing between San Diego and Tijuana
Passport stamp upon arrival in Tijuana, Baja California land border crossing.
Thousands of cars sit from fifteen minutes to two hours waiting to cross the border.
The Big Bend National Park is located at the Border.
Border Patrol agents in southern Texas in 2013.
Drug trafficking tunnel under the U.S.–Mexico border used by the Sinaloa Cartel
Border for pedestrians in Tijuana, Baja California
US Border Patrol agents review documents of individuals suspected of attempted illegal entry in 2019.
Nogales border fence.
United States-Mexico-border-wall-Progreso-Lakes-Texas.
A volunteer from the Humane Border group is refilling water stations located on the desert of the U.S.-Mexico border.
Memorial coffins on the US-Mexico barrier for those killed crossing the border fence in Tijuana, México.
Mexicans crossing the Río Grande face the Big Bend National Park.
A U.S. Army National Guard member working with the U.S. Border Patrol in support of Operation Jump Start, Arizona, July 2006.
Members of the North Carolina Army National Guard monitoring the U.S.–Mexico border in southwest Arizona.
Federal courthouse in Tucson, AZ, where Operation Streamline proceedings take place.
ICE ERO officers deporting a man wanted for two murders in Mexico.
Mexico-US border wall at Tijuana, Mexico.
Entrance into Mexico at Nogales, AZ (USA).
Border Patrol patrolling the Rio Grande in an airboat in Laredo, Texas.
The start of the border fence in the state of New Mexico—just west of El Paso, Texas.
U.S. Border Patrol helicopter along El Camino del Diablo, Arizona–Sonora border, 2004.
Border between Nogales, Arizona, on the left, and Nogales, Sonora, on the right.
On the left: Nogales, Arizona; on the right, Nogales, Sonora.
Beach in Tijuana at the border in 2006.
A CBP Border Patrol vehicle sitting near Mexico–U.S. border.
View of Cross Border Xpress (CBX) bridge from parking lot on U.S. side, with Tijuana Airport on the left and the CBX U.S. terminal on the right.
The U.S.–Mexico border fence near El Paso, Texas.
Portion of border near Jacumba, California, in 2003.
Portion of border near Jacumba, California, in 2009 with enhanced security.

Unincorporated community in the Mountain Empire area of southeastern San Diego County, California, directly adjacent to the Mexican city of Tecate, Baja California.

- Tecate, California

Tecate, California – Tecate, Baja California

- Mexico–United States border

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Catholic procession in Tecate.

Tecate

City in Tecate Municipality, Baja California.

City in Tecate Municipality, Baja California.

Catholic procession in Tecate.
Parque Miguel Hidalgo.
Lázaro Cárdenas memorial.
View of Cerro La Panocha.
Our Lady of Guadalupe Church, part of the Catholic Archdiocese of Tijuana.
The Cuauhtémoc Moctezuma Brewery produces Tecate (beer).
Band of CETIS high school.
Downtown Tecate.

It is across the Mexico-US border from Tecate, California.