Stephen Miller, the deputy White House chief of staff, clapped back at Rep. Alexandria Ocasio-Cortez (D-N.Y.) on Monday after she joked about his height and called him a "clown."

“Well, we knew that her brain didn’t work,” Miller told Fox News's Laura Ingraham on her show "The Ingraham Angle." “Now we know that her eyes don’t work. So, the, she’s a mess, right? What a trainwreck. What a trainwreck.”

"Every time she's on TV, Republican approval ratings go up, Democratic approval ratings go down," Miller continued. "That lady is a walking nightmare."

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