On Monday, the U.S. Department of Homeland Security pledged to "swiftly" investigate what it called "extremely troubling" footage of Border Patrol agents on horseback aggressively dispersing Haitian migrants, saying the internal probe could lead to disciplinary actions. 214/205

Probe underway in border clashes
Probe underway in border clashes
Probe underway in border clashes
Probe underway in border clashes
Probe underway in border clashes