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White House press secretary Jen Psaki on Monday called pictures that appeared to show a U.S. Border Patrol agent on horseback with a whip to deter migrants "horrific," but declined to say what consequences there should be for the agent's actions.

"I have seen some of the footage. I don't have the full context. I can't imagine what context would make that appropriate, but I don't have additional details," she told reporters at the daily White House briefing. "I don't think anyone seeing that footage would think it's acceptable or appropriate."