Which state borders Mexico to the north?

The state that borders Mexico to the north is Texas. This is because Texas shares a lengthy border along the southern part of the state with Mexico, extending approximately 1,254 miles. This border includes several significant points of entry and cultural exchange, as Texas has a long history of interaction with Mexico, influencing its demographics, culture, and economy.

The other states listed—New Mexico, Arizona, and California—also share borders with Mexico, but they do not border Mexico to the north in the context of Texas being the first major state alongside the border moving east to west. New Mexico lies to the northwest of Texas, while Arizona is situated to the west of New Mexico. California is located further west from Arizona and does not border Texas directly. Therefore, Texas is the correct answer as it is the only state mentioned that directly borders Mexico to its north.