CNN legal analyst Jeffrey Toobin said Tuesday that President Trump's attacks against Attorney General Jeff Sessions over charges brought against two GOP lawmakers may be grounds for impeachment.

"This tweet alone may be an impeachable offense," Toobin said on CNN's "New Day." "This is such a disgrace. This is so contrary to the traditions of the Department of Justice (DOJ)."

Toobin added that the public can wear itself out in regards to its outrage over Trump's behavior. But he said that the president's tweet targeting Sessions is different because it "is such an affront to the values of the Justice Department."

"The sentiment at the core of that tweet is so contrary to the mission of the DOJ," he said. "It’s such an insult to the decent people who work there."