Signed February 2, 1848, the treaty compelled Mexico to cede 55 percent of its territory, bringing more than 525,000 square miles under US sovereignty.

From feudal fortresses to contemporary border barriers, walls have always offered more symbolic value than real protection.

What's an illegal alien? The idea that the most important question about immigrants is their legal status is a relatively new one.

Japanese artist collective Chim Pom has stirred up controversy at the US-Mexico Border, building numerous artistic interventions near Tijuana’s border.

How the nearness of the Mexican border influenced formerly enslaved people in the state of Texas.