Grover Norquist, president of the influential group Americans for Tax Reform, called the idea “a particularly cruel thing for Bannon to do” in a Monday appearance on CNN.

In an interview with The Daily Beast, Norquist added that he hadn’t seen the White House float the idea with any vigor. Bannon’s proposal “is not part of the debate at present,” he said. “I don’t see that this one has gotten any bounce or pickup.” He noted that the proposal would violate an ATR pledge to oppose tax hikes signed by hundreds of state and federal officials, including Trump.

Norquist said he hadn’t brought up the issue directly in discussions with the White House. “It’s embarrassing when you ask somebody about a very silly idea they put forward,” he said. “It’s up there with, ‘Was that you that farted?’”