The US government is renewing efforts to keep drug-related violence - and the contraband itself - from spilling over its border with Mexico.<br /><br />But the killing of a rancher in the southwestern US state of Arizona in March has prompted authorities there to press Washington for even tighter security against the traffickers. <br /><br />The ranchers say they have been dragged into the drug war by virtue of their location along a porous and increasingly dangerous border.<br /><br />Al Jazeera's Monica Villamizar reports from a border ranch in Nogales, Arizona, where one rancher shares how he feels about life in the middle of an illegal migration route between Arizona and Mexico.
