The United States ... parts of the border. Out west, between San Diego and Tijuana, Mexico, there’s high double fencing to deter people from crossing illegally. Part of the fence goes right ...

A decades-old treaty with Mexico prohibits building in the Rio Grande floodplain, forcing the US government to build its border fence more than a mile north of the river, effectively cutting into ...

Mexico's northern industrial borderlands are home to thousands of factories thanks to tax breaks and free trade agreements ...