President Trump should have congratulated Sen. Kamala Harris, D-Calif., on being named presumptive Democratic nominee Joe Biden's running mate from the White House briefing room, Sen. Amy Klobuchar, D-Minn., told "Special Report" Tuesday.

"For the president to go before the country like he just did and not just say, 'I congratulate her [and I] welcome her to the race.' -- That is what leaders do," Klobuchar told host Bret Baier.

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"Instead, what did he do? He called her angry, he called her nasty, he went back to the same criticisms with the words we have heard him use against women throughout this presidency, and I just think that is crap.

"I think that's not a nice way to treat someone when they enter the race," she added. "And as someone who knows her, I would never use those adjectives to describe her. I'd use the word 'tough.' I think that's good. I'd use the word [to describe] someone who has grit and strength. I think we want that in a vice president."

Baier said that Trump has told him in the past that his edgy comments come from his character as a "counter-puncher," to which Klobuchar responded, "I would rather have a president that didn't describe themselves in that way."

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Klobuchar also dismissed Republican criticism of Harris' conduct toward Supreme Court Justice Brett Kavanaugh during his confirmation hearings.

"I thought ... She showed grace under pressure like she always does," Klobuchar countered. "Think of all the people she managed at this Justice Department in California [as state attorney general], all those thousands and thousands of people. She's had to make hard decisions."