The Mexican authorities said Tuesday that they had staged 153 raids in the last year on a train known as “The Beast” that rolled toward the United States crowded with Central Americans.

The head of the National Immigration Institute, Ardelio Vargas, said that those raids were among 758 immigration inspections in the past year, and that immigration agents had helped 23,078 child migrants of various nationalities from January 2014 to February. But the train, a decrepit freight line where boxcar roofs were once covered with migrants, drew the most attention.

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http://www.nytimes.com/2015/03/04/world/americas/migrant-train-raided.html?ref=americas&_r=0