President Trump called his former right-wing ally Ann Coulter a “Wacky Nut Job” in a tweet Saturday night, insisting that despite her criticism he’s still “winning on the border.”

Coulter tore into him on Fox News on Saturday for his lack of progress in building his border wall.

Trump replied that “major sections” are being built, “despite all odds and an entire Democrat Party of Far Left Radicals against me (not to mention certain Republicans who are sadly unwilling to fight).”