A Yale classmate of Supreme Court nominee Brett Kavanaugh says the judge lied under oath about his “heavy” drinking habits.
Charles Ludington said that he was “deeply troubled” by the judge’s “blatant mischaracterisation”.
Mr Kavanaugh has denied ever drinking to the point of memory loss – most recently during last week’s testimony before a Senate committee.
The FBI is inquiring into allegations of sexual assault by Mr Kavanaugh.
The new inquiry has delayed a final vote on Judge Kavanaugh, who if confirmed is likely to tip America’s highest court in favour of conservatives.