Migrant smugglers are using groups of children to divert Border Patrol from adults crossing into the U.S., agents say — part of a strategy to take advantage of overwhelmed law enforcement who are tackling a spike in migrant numbers.

Migrant smugglers are using groups of children to divert Border Patrol from adults crossing into the U.S., agents say — part of a strategy to take advantage of overwhelmed law enforcement who are tackling a spike in migrant numbers.