There are more than two states that border Mexico, four do. California, Arizona, New Mexico, and Texas.
The states that border Mexico are California, Arizona, New Mexico and Texas...
Arizona and New Mexico, both Mountain States, border Mexico.
Canada and Mexico border the United States.
The Mexico-United States border is commonly referred to as the US-Mexico border or the Mexican border.
Five border states in the United States are: California, Arizona, New Mexico, Texas, and Florida. These states border either Mexico or Canada.
Canada and Mexico border the United States.
Texas, California, New Mexico and Arizona all border Mexico.
The states that border Mexico are New Mexico, Arizona, California, and Texas.
Canada, Mexico, and Russia border the United States.
Both Mexico and Canada border the United States. Mexico is on the bottom and Canada on the top.
Alaska and North Dakota border Canada. California, New Mexico, and Texas border Mexico.
Depending on how you define Southwestern states, you have Arizona and New Mexico for certain. California and Texas can be added to your list if your definition is broad enough. All of these states border Mexico. None of the states on the Canadian border would be considered "southwetern".