Klobuchar, who worked as a district attorney before being elected to the Senate, was lauded for her incisive questioning of Kavanaugh and remaining cool and collected when he turned the questions back on her.
When Klobuchar asked Kavanaugh if he had ever blacked out from drinking, he responded, "you're asking about, you know, blackout. I don't know. Have you?"
When she asked him to confirm his answer was no, he said "Yeah, and I'm curious if you have," to which she calmly responded, "I have no drinking problem, Judge."
The moment earned Klobuchar praise for her tough, but fair approach to questioning Kavanaugh and staying on topic as opposed to grandstanding.
After meeting with Barr on Thursday, Klobuchar told CNN's Anderson Cooper she intends to put the pressure on Barr in next week's hearings.
"I still have concerns relating to his expansive views on executive power & will push more at the confirmation hearing," Klobuchar wrote on Twitter. "He must promise to uphold the Mueller investigation."