'The hole that Donald Trump is in is going to deepen': CNN legal analyst
President Donald Trump pouts while listening to criticism of his plan to arm teachers (Screen cap).

CNN legal analyst Norm Eisen warned former President Donald Trump on Wednesday that he should be prepared for more bruising days ahead even if the Senate ultimately acquits him on the charge of inciting an insurrection.

Eisen, who helped House Democrats prepare their first impeachment of Trump, argued that the former president's impeachment lawyers had a bad first day of arguments on Tuesday, and he said that House impeachment managers had only just begun to outline their damning case.

"I think there's going to be more footage that America has not seen," he said. "I think they're going to break down the case, and Trump is going to be put front and center. He is culpable, he is responsible. We've just heard the protesters, insurrectionists saying, 'Fight for Trump.' I think the hole that Donald Trump is in is going to deepen."

Eisen admitted that it would be an uphill battle to get senators to convict Trump but he said an acquittal of the former president would say more about Senate Republicans than it would about the case being made by House impeachment managers.

"The United States Senate is on trial," he said. "How can they take the oath and promise to be, as Senator Cassidy said, impartial jurors?... There is no defense for Donald Trump there, there's no defense on the facts. Incitement of insurrection is a high crime, he did it."

Watch the video below.