Images from US border ‘horrified’ Homelands Security chief

US Customs and Border Protection mounted officers attempt to contain migrants as they cross the Rio Grande (AP Photo/Felix Marquez)

US Homeland Security chief Alejandro Mayorkas said images of what appeared to be Border Patrol agents on horseback rounding up migrants trying to cross the southern border “horrified” him.

But he stopped short of calling the new influx of migrants there a crisis.