New government data shows the United States has arrested more than 1 million migrants at the U.S.-Mexico border since October — the highest total in at least two decades. Meanwhile, disturbing details have emerged about the death of a Mexican mother who died last week as she tried to cross into the United States. Griselda Verduzco Armenta tried to climb over a 30-foot-high border fence near Douglas, Arizona, but she choked to death after getting entangled in a climbing harness. Border authorities found her hanging upside down on the border fence. One relative claimed that Griselda tried to cross the border with the help of coyotes, who then left her hanging once she got entangled.