Washington (CNN) Sen. Amy Klobuchar said on Sunday that she was "really stunned" by how Supreme Court nominee Brett Kavanaugh acted when he testified last week at a Senate Judiciary Committee hearing about sexual assault allegations against him.

"I was really stunned by how he acted at that hearing. This is basically a job interview for the highest court of the land," Klobuchar told CNN "State of the Union" anchor Jake Tapper.

At last week's hearing, the Minnesota Democrat and member of the committee, engaged in a tense exchange with Kavanaugh about his drinking habits, including if he had ever drunk so much he "didn't remember what happened the night before or part of what happened."

"You're asking about blackout. I don't know, have you?" he responded.

"Could you answer the question, judge?" Klobuchar said, looking somewhat surprised by the response. "So, you have, that's not happened? Is that your answer."

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