Democrat Alan Dershowitz appeared on Fox News Monday, saying that special counsel Robert Mueller has a “credibility problem” over his investigation of Donald Trump.

Dershowitz said, “I’m not a Republican, I’m a Democrat. I think he has a credibility problem.”

“He should have been more careful about who he hired. He should have disclosed he had taken that FBI agent off the case after his messages came out. I think he has a credibility problem on these emails without a warrant. I think he has a credibility problem if he used the dossier in order to get national security wiretaps,” he added. 

He also said, “[Mueller] has been conducting a sloppy investigation, and that’s atypical of him. I’m surprised. When you are going after the president, you have to be Caesar’s wife–you have to be above reproach. You can’t give the other side any ammunition, and he has given the other side plenty of ammunition.”