The Mexican Border is the international boundary between the United States and Mexico, stretching approximately 1,954 miles. It runs from the Pacific Ocean in the west to the Gulf of Mexico in the east, passing through various terrains, including deserts, mountains, and rivers. This border is significant for trade, culture, and immigration. The border is marked by a combination of fences, walls, and natural barriers. It is monitored by agencies such as the U.S. Customs and Border Protection to manage the flow of people and goods. The border region is home to several cities, including Tijuana in Mexico and San Diego in the U.S.