Last week U.S. President Barack Obama pledged to send 1200 National Guard troops to the border with Mexico with the primary aim to prevent drug smuggling. The deployment includes an additional $500 million in federal funds while the Mexican government supported the move as a security measure.
The issue of so-called "militarizing" the border has always been a sensitive topic and that can be seen in the below video via PBS. "The Ballad of Esequiel Hernández" was a documentary that highlighted the 1997 death of a Texan teen near the border by U.S. Marines. The trailer for the film looks at the complex topic of immigration as well as the efficacy (or perhaps the lack of it) in the "war on drugs".
Online Sources - YouTube, New York Times, Times Online