In 1904, the El Paso Herald called for “a barb wire fence along our side of the Rio Grande” to keep out “undesirable aliens.” The newspaper wasn’t referring to Mexicans, but to Chinese immigrants, ...

Dozens of Marines unfurled coils of concertina wire — one on the ground and one slightly above — making it more difficult to climb a border wall separating Tijuana from San Diego. They worked with ...

Few inventions that were designed in the 1870s that have not changed since they were patented, and they are still widely used in the 21st century. Barbed wire is an innovation that fits this category, ...