In Arizona, the humanitarian group No More Deaths is holding an emergency press conference today following the arrest of two of its members. The group offers food and medical assistance to undocumented migrants who cross from Mexico into Arizona via the desert. On Saturday Border Patrol agents arrested two members of the group as they were driving three migrants, including a 13-year-old boy, to a local hospital for medical care. The two volunteers were charged with the felony of transporting an undocumented person and obstruction of justice. Last month the group said it helped rescue 175 migrants in distress in the desert. Since October it is estimated that 151 migrants have died while crossing the border.