Meanwhile, Ford's lawyers continue to tussle with Republican leadership on the Senate Judiciary Committee about when, if ever, she will appear before the committee to testify. Ford, through her attorneys, has said she cannot appear Monday but could later in the week. No decisions were reached, the aide said.
Kavanaugh has had a relatively smooth confirmation track until the allegations against him were reported last week.
Thursday's development came on the eve of a Republican-set deadline for Prof Ford to decide whether she would give evidence.
"We fear that rather than learning from the past, Senate Republicans and the Trump Administration are repeating this Committee's previous mistakes and making new ones". The FBI has said it is not investigating, a decision backed by Republicans who have accused Democrats of trying to delay the confirmation process. The president launched a tweet attack on Dr. Christine Blasey Ford that's shocking - even for him. Again, says Irvine, that's not the job of a newspaper or any other media outlet.
"Brett stood out as the most responsible guy who treated us with kindness and respect", said Megan McCaleb, a former classmate and longtime friend of Kavanaugh. In a letter of his own, Judiciary Committee Chairman Chuck Grassley declined to postpone, arguing that it was the responsibility of the committee, not the FBI, to investigate the allegation, and that hearing her testimony was a crucial step in that process that should not be delayed. "He remains committed to providing a fair forum for both Dr. Ford and Judge Kavanaugh", said Taylor Foy, a spokesman for Grassley.
Collins, a swing vote on the nomination, said the California college professor needs to testify so senators can assess her credibility. "She wishes to testify, provided that we can agree on terms that are fair and which ensure her safety".More news: EU, UK fail to resolve border row as Brexit deadline looms
"Judge Kavanaugh has not asked to have the FBI investigate these claims". At each step, committee Democrats have publicly echoed Ford's call for a delayed hearing.
Should Ford testify, especially in public, it would pit the words of two distinguished professionals against each other as television close-ups capture every emotion. Assessing them would be not just the committee's 21 senators -only four of whom are women, all Democrats - but also millions of viewing voters. Republicans are unlikely to agree to calling witnesses aside from Ford and Kavanaugh.
If Ford doesn't show up to testify, Roberts said we should practice saying "Justice Kavanaugh".
"I will be there", he wrote Grassley in a letter.
Sara Fagen, another longtime friend who worked with Kavanaugh in the White House, told a story about how Kavanaugh helped her the day of the September 11, 2001 attacks.
After Grassley rebuffed the request for an FBI investigation and President Donald Trump downplayed the notion, Ford's attorney Lisa Banks said on Wednesday that "the rush to a hearing is unnecessary, and contrary to the committee discovering the truth". President Trump has said that the FBI does not do investigations into allegations like those raised by Dr Ford.More news: Beyoncé accused of witchcraft by ex-drummer
But US President Donald Trump and congressional Republicans have already ruled that out.
At a Las Vegas rally not long after, Trump praised Kavanaugh as "one of the finest human beings you will ever have the privilege of knowing or meeting" and called his reputation "impeccable". Ford wrote that Kavanaugh pushed her into a bedroom along with another male companion.
A day earlier, alumni from Ford's high school, Holton-Arms, held a press conference with Sens. Ford's attorneys raised the possibility of subpoenaing several witnesses including Mark Judge, who she says egged Kavanaugh on during the assault.
Roberts had criticism for Democrats too, noting they are fooling no one with their histrionics.
Republicans still hope to have Kavanaugh confirmed before the high court begins its next session on October 1.More news: May says European Union response to UK Brexit plan 'unacceptable'