This Saturday, CNN conservative commentator Ben Ferguson left host Poppy Harlow dumbfounded when he slammed Florida Democratic Rep. John Lewis‘s description of president-elect Donald Trump as an “illegitimate president.”

“I can’t imagine the fallout, the backfire that you would have if a Republican ever implied that about Barack Obama or Bill Clinton or JFK or anyone else for that matter,” he continued.

“Ben, Ben, Ben,” Harlow interrupted. “That’s exactly what many Republicans did, including [Trump] for years questioning the legitimacy of the first black president.”

Not that it needs repeating, but for years Trump put himself at the forefront of the birther movement, which disseminated the conspiracy that claimed Barack Obama had his birth certificate forged and was actually born in Kenya.

“The president-elect did that to the sitting president for years,” Harlow said.

Watch the video below:

Republican Ben Ferguson: I can’t imagine the fallout if a Republican were to ever say Obama wasn’t a legitimate president CNN anchor: Umm pic.twitter.com/BJiOpJGrLo — David Mack (@davidmackau) January 14, 2017

Featured image via screen grab