The Rio Grande (Río Bravo del Norte) has changed course several times in recorded history, leading to a number of border disputes, both international (involving Mexico and the United States) and between individual U.S. states:

• The Country Club Area was disputed between Texas and New Mexico. The U.S. Supreme Court ended this dispute in 1927.

• The Chamizal was a disputed parcel of land between El Paso, Texas, and Ciudad Juárez, Chihuahua. This dispute was resolved by treaty in 1963.

• The Ojinaga Cut was a disputed parcel of land between Presidio, Texas, and Ojinaga, Chihuahua. This dispute was resolved by treaty in 1970.

• The Horcon Tract was a disputed parcel of land that included Rio Rico, Texas. This dispute was resolved by treaty in 1970, but the official handover did not take place until 1977.

1963 in Mexico | 1970 in Mexico | Chihuahua | Foreign relations of Mexico | History of New Mexico | History of Texas | History of foreign relations of the United States | Mexico and the United States | Modern Mexico | Territorial disputes of the United States