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Jose Jesus Ramirez and Jose Hernandez

Illegal ImmigrantsImmigrationMigrationJose Hernandez
Ramirez, left, and Hernandez nervously scan a phalanx of fences that fortify where the boundaries of California, Arizona and Sonora, Mexico, meet. A downward trend in arrests of illegal immigrants began at about the same time the U.S. started fortifying the border with more agents, fencing... Don Bartletti / Los Angeles Times