The Department of Homeland Security (DHS) confirmed it is investigating a video that appeared to show Border Patrol agents corralling illegal immigrants who crossed into the United States near the Mexican border. “DHS does not tolerate the abuse of migrants in our custody and we take these allegations very seriously,” the department said in a statement on Twitter, adding that it reviewed the video footage. “We are committed to processing migrants in a safe, orderly, and humane way. We can and must do this in a way that ensures the safety and dignity of migrants.” Videos taken by Al Jazeera and Reuters appear to show Border Patrol officials on horseback chasing several illegal aliens who are believed to be from Haiti after they crossed the border near Del Rio, Texas. A video published by Reuters shows the agents twirling long reins for the horses near the illegal aliens. “I don’t …