Monday on CNN’s “Anderson Cooper 360,” Harvard law professor Alan Dershowitz said he does not believe President Donald Trump was correct in his assertion that a president can pardon himself.

Dershowitz said, “I’ve always said it would be utterly inappropriate for a president to collude with ay foreign power, especially an enemy foreign power, absolutely inappropriate. But there is a difference between inappropriate and criminal. For something to be criminal it has to be in the criminal statute book.”

He continued, “Look, I have disagreed with a great deal of what has gone on today from the White House. I don’t think that a president necessarily has the power to pardon himself.”

He added, “Nobody knows the answer to that question. It is clearly on a blank slate. Nobody should be saying either that the president clearly has a power to pardon himself or the president doesn’t have the power. We don’t know the answer to the question and probably will never find it out. ”

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