The professor, Chad Ludington, said he frequently saw Judge Kavanaugh “staggering from alcohol consumption” during their student years. He said he planned to tell his story to the F.B.I. at its office in Raleigh, N.C., on Monday. A spokesman for the White House declined to comment on Mr. Ludington’s allegations…

He said Judge Kavanaugh had often become “belligerent and aggressive” while intoxicated during his first two years at Yale. Mr. Ludington recalled one incident in which he said Judge Kavanaugh threw a beer in someone’s face, “starting a fight that ended with one of our mutual friends in jail.”…

In a call to Senator Mitch McConnell, the majority leader, nine days ago from his Bedminster, N.J., country club, Mr. Trump unleashed an expletive-filled tirade, telling Mr. McConnell that he had let the process get away from him.

Mr. Trump later told associates that the Republicans and Mr. McGahn had erred by not quickly holding a full Senate vote on Judge Kavanaugh’s nomination on Friday, after the Judiciary Committee advanced it along party lines, the people said. The president said senators like Mr. Flake who were wavering about the nomination should have been forced to vote against Judge Kavanaugh and suffer the political consequences, the people said.