Latino Democrats today said a Republican senator made an “offensive and ignorant” decision when she read a racially tinged letter on the Senate floor during the debate of an immigration bill last week.

University of Arizona students walking to class Monday were faced with a steel and barbed wire obstacle.

U.S. Border Patrol agents say they have discovered a partially completed smuggling tunnel west of the border crossing in Nogales.

Students at the University of Arizona are planning to erect the largest mock border wall in the country in protest of border enforcement policies in Arizona and nationwide.

The chairman of a civilian border watch group described by a watchdog organization as a "vitriolic Mexican-basher" who courts white supremacists will no longer be giving a presentation about the state of the U.S.-Mexico border to an Arizona Senate panel.

National Guard troops set up along the Arizona border will leave as planned the second week of June. Arizona National Guard Adjutant General Hugo Salazar says the mission along the southwestern border has gone well and troops helped the Department of Homeland Security watch the border while gathering intelligence against criminal cartels.

Technology to replace a now defunct virtual fence project at the Mexican border likely won't be fully in place for at least another decade, maybe longer, according to the Government Accountability Office.

The Nogales Police Department's data for 2010 shows an 11 percent drop from the previous year in serious crimes like homicides, rapes, robberies and assaults. Now, city leaders, residents and businesspeople say it’s unfair that Nogales is often portrayed as rife with conflict and bloodshed from drug cartels.

Attorney General Eric Holder has asked the Justice Department inspector general to take another look at the efforts of U.S. agents who hunt gun traffickers along the U.S. border with Mexico.

Seeking to repair damaged relations, President Barack Obama and Mexican President Felipe Calderon agreed Thursday to deepen their cooperation in combating drug violence and declared a breakthrough in efforts to end a long-standing dispute over cross-border trucking.