Former Vermont Gov. Howard Dean (D) lashed out at MSNBC host Alex Witt on Sunday after she claimed that former President Bill Clinton's impromptu tarmac meeting with Attorney General Loretta was "inexcusable."

During a Sunday discussion about Hillary Clinton's email server scandal on MSNBC, Republican strategist Susan Del Percio focused on Bill Clinton's recent decision to board the attorney general's plane unannounced on a tarmac in Phoenix.

"No one else would have seen the spouse of someone else under investigation," Percio said. "It does play into Donald Trump's issue that the system is rigged."

"As innocent as it may have been," Witt said, turning to Dean, "politically, isn't it almost inexcusable?"

"Here's what's inexcusable," Dean shot back. "We're spending all this time on television talking about a visit between Loretta Lynch and President Clinton. Why aren't we talking about how to get jobs back in America? Why aren't we talking about what we're going to do about healthcare? Why aren't we talking about foreign policy? This is ridiculous. This goes on and on and on and on. Nobody wants to take the serious issues seriously."

"Should it not have been done?" Witt pressed. "Should Bill Clinton have known better? Should Loretta Lynch have known better?"

"Maybe they should have known better, maybe all kinds of things should have happened," Dean replied. "Can't we starting talking about issues that effect the American people in this campaign? How long is this going to go on? When are we going to talk about substance? When are we going to talk about jobs? When are we going to talk about healthcare? When are we going to talk about education? When are we going to talk about prison reform?"

"When Bill Clinton stops doing unforced errors," Percio insisted.

"Nonsense!" Dean exclaimed. "This is crap. We ought be talking about serious stuff, not who did what to who. The reason this happens is because the right wing has got nothing on the Clintons, and all they can do is make up stuff like this."