<Li> <P> Beach in Tijuana at the border </P> </Li> <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>

What four states in the us form the northern border of mexico