The Texas National Guard, which was deployed to El Paso on Monday by Texas Gov. Greg Abbott, strung concertina wire Tuesday along the Rio Grande near Downtown El Paso. The area has been a popular crossing point in recent weeks for migrants seeking to enter the United States.

Corrie Boudreaux is a lecturer in the Department of Communication at UTEP and a freelance photojournalist in the El Paso-Ciudad Juárez region. She specializes in photography as a tool to explore insecurity,...