Tijuana in the context of "Tecate"

A border wall has been built along portions of the Mexico–United States border in an attempt to reduce illegal immigration to the United States from Mexico. The barrier is not a continuous structure but a series of obstructions variously classified as "fences" or "walls".

Between the physical barriers, security is provided by a "virtual fence" of sensors, cameras, and other surveillance equipment used to dispatch United States Border Patrol agents to suspected migrant crossings. In May 2011, the Department of Homeland Security (DHS) said it had 649 miles (1,044 km) of barriers in place. A total of 438 miles (705 km) of new primary barriers were built during Donald Trump's first presidency, dubbed the "Trump wall", though Trump had repeatedly promised a "giant wall" spanning the entire border and that Mexico would "pay for the wall," neither of which were done. The national border's length is 1,954 miles (3,145 km), of which 1,255 miles (2,020 km) is the Rio Grande and 699 miles (1,125 km) is on land.

An edge city is a concentration of business, shopping, and entertainment outside a traditional downtown or central business district, in what had previously been a suburban, residential or rural area. The term was popularized by the 1991 book Edge City: Life on the New Frontier by Joel Garreau, who established its current meaning while working as a reporter for The Washington Post. Garreau argues that the edge city has become the standard form of urban growth worldwide, representing a 20th-century urban form unlike that of the 19th-century central downtown. Other terms for these areas include suburban activity centers, megacenters, and suburban business districts. These districts have now developed in many countries.

Baja California, officially the Free and Sovereign State of Baja California, is a state in Mexico. It is the northwesternmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of Baja California (Territorio Norte de Baja California). It has an area of 70,113 km (27,071 sq mi) (3.57% of the land mass of Mexico) and comprises the northern half of the Baja California peninsula, north of the 28th parallel, plus oceanic Guadalupe Island. The mainland portion of the state is bordered on the west by the Pacific Ocean, on the east by Sonora and the northern Gulf of California, on the north by the United States and on the south by Baja California Sur.

The state has an estimated population of 3,769,020 as of 2020, significantly higher than the sparsely populated Baja California Sur to the south, and similar to San Diego County, California, to its north. Over 75% of the population lives in Mexicali (the state's capital city), Ensenada, or Tijuana (the state's largest city). Other important cities include San Felipe, Rosarito, and Tecate.

The Tijuana River (Spanish: Río Tijuana) is an intermittent river, 120 mi (195 km) long, near the Pacific coast of northern Baja California state in northwestern Mexico and Southern California in the western United States. The lower reaches of the river are heavily polluted with raw sewage from the city of Tijuana, Mexico.

32°32′31.87″N 117°01′46.63″W / 32.5421861°N 117.0296194°W / 32.5421861; -117.0296194

San Diego–Tijuana is an international transborder agglomeration, straddling the border of the adjacent North American coastal cities of San Diego, California, United States, and Tijuana, Baja California, Mexico. The 2020 population of the region was 5,456,577, making it the largest bi-national conurbation shared between the United States and Mexico, and the second-largest shared between the US and another country. The conurbation consists of San Diego County, (2020 population 3,298,634) in the United States and the municipalities of Tijuana (2020 pop. 1,922,523), Rosarito Beach (126,980), and Tecate (108,440) in Mexico. It is the third-most populous region in the California–Baja California region, smaller only than the metropolitan areas of Greater Los Angeles and the San Francisco Bay Area.

Zona Río (English: "River Zone") is an official zone, and the main modern business district, of the city of Tijuana, Mexico.

Zona Río is located at a strategic point, in the north of the city, about 1 mile (1.6 km) from the U.S.-Mexico border and 9 miles (14 km) from downtown San Diego. The Río Zone is within the Delegación Centro, or Central borough, of Tijuana. The old downtown of Tijuana, Zona Centro, borders Zona Río on the west.

Crime is one of the most urgent concerns facing Mexico, as Mexican drug trafficking rings play a major role in the flow of cocaine, methamphetamine, fentanyl, heroin, and marijuana transiting between Latin America and the United States. Drug trafficking has led to corruption, which has had a deleterious effect on Mexico's Federal Representative Republic. Drug trafficking and organized crime have been a major source of violent crime. Drug cartels and gangs have also branched out to conduct alternative illegal activities for profit, including sex trafficking. Some of the most increasingly violent states in Mexico in 2020 included Guanajuato, Zacatecas, Michoacán, Jalisco, and Querétaro. Some of the world's most violent cities are reportedly within the state of Guanajuato with extortion from criminal groups (such as CSRL and CJNG) now being commonplace. The state of Zacatecas is said to be valuable to multiple organized crime groups (including the Sinaloa Cartel and CJNG) for drug trafficking, specifically methamphetamine to the United States. As of 2021, Michoacán is experiencing increased instances of extortion and kidnapping due to a growing presence and escalation in the armed conflicts between CJNG and Cárteles Unidos on regions bordering the neighboring state of Jalisco. CJNG is also currently battling the Los Chapitos faction of the Sinaloa Cartel in the North Mexican region of Sonora.

Mexico has experienced increasingly high crime rates, especially in major urban centers. The country's great economic polarization has stimulated criminal activity mainly in the lower socioeconomic strata, which include the majority of the country's population. Crime is increasing at high levels, and is repeatedly marked by violence, especially in the cities of Tijuana and Ciudad Juárez, and the states of Baja California, Durango, Sinaloa, Guerrero, Chihuahua, Michoacán, Tamaulipas, and Nuevo León. Other metropolitan areas have lower, yet still serious, levels of crime. Low apprehension and conviction rates contribute to the high crime rate. Since many crimes go unreported, the rates may be much higher than reported by the government. The murder rate in 2023 was 23.3 per 100,000. Most of the crime is committed by a small proportion of the population involved in the drug trade with about half of murders being drug-related.