<P> Beach in Tijuana at the border </P> <P> The U.S. states along the border, from west to east, are California, Arizona, New Mexico, and Texas . The Mexican states along the border are Baja California, Sonora, Chihuahua, Coahuila, Nuevo León, and Tamaulipas . </P> <P> Among the U.S. states, Texas has the longest stretch of the border with Mexico, while California has the shortest . Among the states in Mexico, Chihuahua has the longest border with the United States, while Nuevo León has the shortest . </P> <P> Texas borders four Mexican states--Tamaulipas, Nuevo León, Coahuila, and Chihuahua--the most of any U.S. states . New Mexico and Arizona each borders two Mexican states (Chihuahua and Sonora; Sonora and Baja California, respectively). California borders only Baja California . </P>

The country of shares a border with california