Frustrated potential witnesses who have been unable to speak with the F.B.I. agents conducting the investigation into sexual-assault allegations against Donald Trump’s Supreme Court nominee, Brett Kavanaugh, have been resorting to sending statements, unsolicited, to the Bureau and to senators, in hopes that they would be seen before the inquiry concluded. On Monday, President Trump said that the Bureau should be able to interview “anybody they want within reason,” but the extent of the constraints placed on the investigating agents by the White House remained unclear. Late Wednesday night, Senate Majority Leader Mitch McConnell announced that the F.B.I. probe was over, and cleared the way for an important procedural vote on Kavanaugh’s nomination to take place on Friday. NBC News reported that dozens of people who said that they had information about Kavanaugh had contacted F.B.I. field offices, but agents had not been permitted to talk to many of them. Several people interested in speaking to the F.B.I. expressed exasperation in interviews with The New Yorker at what they perceived to be a lack of interest in their accounts.

Deborah Ramirez, one of the women who has accused Kavanaugh of sexual abuse, said in an interview that she had been hopeful that her story would be investigated when two agents drove from Denver to Boulder, Colorado, last weekend to interview her at her lawyer’s office. But Ramirez said that she was troubled by what she perceived as a lack of willingness on the part of the Bureau to take steps to substantiate her claims. “I am very alarmed: first, that I was denied an F.B.I. investigation for five days, and then, when one was granted, that it was given on a short timeline and that the people who were key to corroborating my story have not been contacted,” Ramirez said. “I feel like I’m being silenced.”

Ramirez, a classmate of Kavanaugh’s at Yale, says that he exposed himself to her during a drunken dormitory party and thrust his penis in her face, which led to her touching it against her will. Kavanaugh has denied the allegation, along with that of Christine Blasey Ford, a professor from California who said that Kavanaugh sexually assaulted her at a party when they were teen-agers. Several former Yale students who claim to have information regarding the alleged incident with Ramirez or about Kavanaugh’s behavior at Yale said that they had not been contacted by the F.B.I. Kenneth G. Appold was a suitemate of Kavanaugh’s at the time of the alleged incident. He had previously spoken to The New Yorker about Ramirez on condition of anonymity, but he said that he is now willing to be identified because he believes that the F.B.I. must thoroughly investigate her allegation. Appold, who is the James Hastings Nichols Professor of Reformation History at Princeton Theological Seminary, said that he first heard about the alleged incident involving Kavanaugh and Ramirez either the night it occurred or a day or two later. Appold said that he was “one-hundred-per-cent certain” that he was told that Kavanaugh was the male student who exposed himself to Ramirez. He said that he never discussed the allegation with Ramirez, whom he said he barely knew in college. But he recalled details—which, he said, an eyewitness described to him at the time—that match Ramirez’s memory of what happened. “I can corroborate Debbie’s account,” he said in an interview. “I believe her because it matches the same story I heard thirty-five years ago, although the two of us have never talked.”

Appold, who won two Fulbright Fellowships, and earned his Ph.D. in religious studies from Yale in 1994, also recalled telling his graduate-school roommate about the incident in 1989 or 1990. That roommate, Michael Wetstone, who is now an architect, confirmed Appold’s account and said, “It stood out in our minds because it was a shocking story of transgression.” Appold said that he initially asked to remain anonymous because he hoped to make contact first with the classmate who, to the best of his recollection, told him about the party and was an eyewitness to the incident. He said that he had not been able to get any response from that person, despite multiple attempts to do so. The New Yorker reached the classmate, but he said that he had no memory of the incident.

Appold reached out to the Bureau last weekend but did not hear back. Frustrated, he submitted a statement through an F.B.I. Web portal. During his first year at Yale, Appold lived in the basement of Lawrance Hall, one of the university’s freshman dormitories. He was in the same suite of bedrooms as Kavanaugh, sharing a common room. Appold said of Kavanaugh, “We didn’t hang out together, but there was no animosity between us either.” He said he believes that “there were two sides to Brett.” Those who have described the judge as studious and somewhat reserved or shy are correct, he said. He added, “That was true part of the time, but so are the other things that have been said about him. He drank a lot, and when he was drinking he could be aggressive, and belligerent. He wasn’t beating people up, but there was an edge and an obnoxiousness that I could see at the hearings. When I saw clips”—of Kavanaugh’s Senate testimony—“I remembered it immediately.”

Appold said that he learned about the alleged incident with Ramirez during the winter of the 1983-84 school year. He recalled being told that, during a party in a first-floor common room in Lawrance Hall, Kavanaugh went over to Ramirez, who had been participating in a drinking game, “and opened his pants, and pulled out his penis, and tried to put it in her face.” But she waved him away. Appold recalled hearing that Ramirez said something like “It’s not a real penis.” He said that the remark made no sense to him at the time, and he understood it only after reading Ramirez’s allegation in The New Yorker and learning that people had been playing pranks with a fake plastic penis at the party.

In an interview with The New Yorker last month, Ramirez said, “I remember a penis being in front of my face,” and that “I knew that’s not what I wanted, even in that state of mind.” She recalled remarking, “That’s not a real penis,” and that other students were laughing at her confusion and taunting her; one encouraged her to “kiss it.”

Appold recalled being “shocked” when he was told of Kavanaugh’s alleged behavior. “The person who saw it was taken aback by what he had seen,” too, he said. Appold added, “It was a disturbing thing. I think everyone recognized that a line had been crossed here.”

Looking back, Appold said, “The thing I ask myself is, why didn’t anybody do anything about it? Why didn’t anybody report it?” But, he added, “The times were different then. Today I’m an educator, and if something like this happened, I’d know exactly where to go to the Title IX people. But back then there was no place to report these uncomfortable things—we tried to forget about them.” Kavanaugh has argued that, if he had behaved as Ramirez described, the whole campus would have talked about it, but Appold said that, to the contrary, “It was more, like, ‘Don’t talk about it.’ ”