County Supervisor Jim Desmond testified before the House Committee on Homeland Security in Washington on Wednesday, telling lawmakers that the arrival of so many migrants — many of them asylum seekers — has strained San Diego County’s resources and raised concerns about how border-crossers entering the U.

The former top Border Patrol agent for the San Diego area testified at a hearing on the border crisis that pimps were taking advantage of young female migrants after they were released into shelters.