“He’s done it twice, and he hasn’t had the best track record doing it,” the longtime Clinton adviser told host John Catsimatidis on “The Cats Roundtable” on AM 970 in New York.

Biden met with Sen. Elizabeth Warren (D-Mass.) on Saturday in Washington, D.C., CNN reported, amid buzz he is seriously weighing a 2016 Oval Office bid.

It is seen as biggest indicator yet that Biden is seriously tempted by a presidential run next year.

“I don’t hold to any illusions that this is going to be some kind of an easy straight shot open thing,” Carville said on Sunday of Hillary Clinton’s campaign.

Carville also dismissed the controversy surrounding Clinton’s use of a private email server while secretary of State, saying, “The press goes from one thing to another, and it never amounts to anything … At the end of the day, they’ll find out there wasn’t anything to this.”