The woman told agents she had fallen off the fence on the Mexico side and injured herself. A smuggler took the child and told her the Border Patrol would take care of him.
Mexico voiced its "most energetic rejection" of the decision by U.S. authorities.
Security Minister Sergio Berni says authorities received information that 'El Chapo' tried to cross the Chilean-Argentine border.
Hundreds of immigrant families caught illegally crossing the Mexican border between July and September told U.S. immigration agents they made the dangerous trip in part because they believed they would be permitted to stay in the U.S.
Rosario Rafael Burboa Álvarez was sentenced Monday for first-degree murder in the 2010 death of Agent Brian Terry.
Only about 800 of the 120,939 immigrant apprehensions made by the Border Patrol in the Tucson Sector in fiscal year 2013 were made at checkpoints. That's 0.67 percent.
The supervisor's target was a Mexican citizen who holds legal residency in the United States.
The agent was charged Sept. 23 and has been placed on administrative leave, nearly three years after he fatally shot 16-year-old José Antonio Elena Rodríguez.
Troubling, sad and deeply compelling, this film succeeds on every level.