San Diego Explained: Undocumented Immigrants

The nation’s current border crisis includes a large increase in unaccompanied undocumented children trying to illegally enter the United States. More than 52,000 children have been taken into custody, a 99 percent increase over the previous year. NBC 7’s Catherine Garcia and The Voice of San Diego’s Scott Lewis explain who these undocumented immigrant children are, and what is happening in the countries from which they are fleeing.