Twice as many unaccompanied children are coming over the U.S.-Mexico border this year, and they're also younger than ever. According to a Pew study, there is a 117 percent increase in captures of children ages 12 or under who have made the long journey alone. More than 57,000 young kids have crossed into the U.S. without a parent or guardian since October. The majority are 16 and 17 years old and only 2 percent were under 5 this year.
