White House trade adviser Peter Navarro ripped reports Sunday that senior Trump administration officials were complaining that he used “guerilla warfare” tactics in the West Wing to unduly influence President Trump’s economic policy, including lobbying for Trump’s hastily announced tariffs on steel and aluminum imports.

“I would say that sitting here on a Sunday with you, that’s a bit of a cheap shot, that there’s no facts and evidence to support that,” Navarro told Chris Wallace on “Fox News Sunday” when asked to respond to the accusations.