Usa Mexıco Border

epa02176472 A large steel fence separates the United StatesMexico in Nogales, Arizona, USA, 27 May 2010. The fence separates Nogales, ArizonaNogales, Mexico on the United States border. US President Barack Obama plans to send 1,200 National Guard troops to help secure the border with Mexico, combat drug smuggling, confronting illegal immigrationprevent cross border violence, an administration official said on 25 May 2010.  EPA/JOHN G. MABANGLO