Right-wing political writer Ann Coulter has officially landed on President Donald Trump’s bad side.

The president on Saturday lashed out against Coulter, a former Trump supporter who has recently dialed up her attacks against the president for not delivering on his promise of a border wall.

In a series of tweets, Trump called Coulter a “Wacky Nut Job” who “still hasn’t figured out that, despite all odds... I am winning on the Border.”

“Tens of thousands of illegals are being apprehended (captured) at the Border and NOT allowed into our Country,” the president went on. “With another President, millions would be pouring in.”

It was just a few weeks ago that Trump claimed to “hardly know” Coulter when a reporter brought her up.