From Breitbart:
Marcos Rodriguez-Perez was previously given “supervised release” by U.S. authorities for illegally smuggling human beings into the US. While on supervised release, the illegal alien participated in the 2009 killing of U.S. Border Patrol Agent Robert Rosas, Jr., along with three other Mexican nationals who had also entered the U.S. illegally or otherwise played a role in the killing. The four admittedly took advantage of the unsecured U.S./Mexico border and lured, trapped, and murdered the young Border Patrol agent for the purpose of stealing his night-vision goggles.
Rodriguez-Perez will serve 56 years in a U.S. prison cell for his participation in the crime.