Another Democratic lawmaker has weighed in on President Biden's mental fortitude and whether he is capable of holding office for a second term.

Rep. James Clyburn, D-S.C., admitted to NBC in a Friday interview that Biden is not the same person as he was four years ago, but asserted that he is still "mentally" fit with one of the "best minds" he's ever worked with.

"You’re traveling with him next week, you’ve spent more time with the president than just about anybody else in the House, is this the same Joe Biden that we saw two years ago?" interviewer Craig Melvin asked Clyburn, who had endorsed Biden in the 2020 presidential race. 

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"Well, look, I grew up in..." Clyburn started to say before he was asked again, "Is it the same Joe Biden?" 

"No," Clyburn said emphatically, adding that, "I’m not the same Jim Clyburn that I was four years ago." 

Clyburn later said he doesn’t think Biden, physically, is the same as he was during the last presidential election cycle. 

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"Mentally, I do think so," Clyburn declared. "He is still grasping what this country is all about." 

"He has one of the best minds that I have ever been around. The people who've been around him will tell you that, and so I would hope that we will focus on the substance of this man, rather than these sometimes, misspoken words and phrases, and how he has run this country."

Biden faced a wave of mockery online Thursday after he introduced Ukrainian President Volodymyr Zelenskyy as "President Putin" ahead of his press conference.

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During the conference, Biden also referred to his Republican opponent, former President Donald Trump, as his vice-president.

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Biden was peppered with questions from reporters who pressed him on whether he would step aside amid mounting pressure from members within his own party following his disastrous debate performance last month.

The president dismissed the notion he's "slowing down" and insisted he was "determined on running" in this year's election.

Fox News Digital's Greg Norman and Brooke Singman contributed to this report. 

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Nothing was off limits for tennis legend Serena Williams as she hosted the ESPYs in Los Angeles on Thursday night. 

During her opening monologue, Williams recognized Indiana Fever rookie Caitlin Clark for the three nominations she received, including best women's athlete of the year. 

Despite first praising the WNBA’s first overall pick, Williams made a joke about the debate surrounding Clark’s unprecedented popularity in the league. 

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"Caitlin Clark has had an amazing year and is nominated for three awards. Caitlin, you are the Larry Bird in that you are an amazing player, you have ties to Indiana, and White people are really crazy about you." 

However, Williams’ remark in jest follows her recent advice to Clark, when she suggested that the root of the controversy surrounding her pro debut stems from jealousy. 

"I just love that she tried to stay grounded and that she doesn't ... look at her social [media]," Williams told The Associated Press last month on the red carpet for the premier of her new docuseries. 

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"I get it. I don't either. And I think it's so important to continue doing what she's doing. And no matter what other people do, if people are negative then it's because they can't do what you do, basically. Hopefully she'll continue to do what she's doing."

Clark has done just that. 

Over the weekend, the former Iowa star dropped 19 points, handed out 13 assists and grabbed 12 rebounds to become the first rookie in WNBA history to record a triple-double. She also received the most votes for the WNBA All-Star Game, and this week, she became the first WNBA player to get at least 25 points, 10 assists, five rebounds, five steals and five 3-pointers in a single game. 

Despite losing the best women's athlete of the year award to Las Vegas Aces star A'ja Wilson, Clark won two awards for record-breaking performance in becoming the NCAA’s all-time career scoring leader, and as best college athlete, for her Iowa basketball career.

"I’m a little bit busy in Indianapolis," Clark said via videotape. "It was a special year in women’s athletics."

Fox News’ Chantz Martin and The Associated Press contributed to this report. 

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