<div class="css-s99gbd StoryBodyCompanionColumn" data-testid="companionColumn-0"><div class="css-53u6y8"><p class="css-at9mc1 evys1bk0">Former President Joseph R. Biden Jr.’s aides did not want him to speak with me.</p><p class="css-at9mc1 evys1bk0">For months, as I worked on a book about the 2024 presidential election, I made multiple requests for an interview with Mr. Biden. One of my co-authors had sat down with President-elect Donald J. Trump, and we felt it was critical to talk to Mr. Biden. But the former president’s aides said he was working on a memoir, and that would conflict with my book.</p><p class="css-at9mc1 evys1bk0">Yet when I reached Mr. Biden on his cellphone in late March, he answered and agreed to talk. He broke his silence on his successor to criticize the early weeks of Mr. Trump’s second term. “I don’t see anything he’s done that’s been productive,” the former president said.</p><p class="css-at9mc1 evys1bk0">When I asked if he had any regrets about dropping out of the presidential race, Mr. Biden said, in a detached tone, “No, not now. I don’t spend a lot of time on regrets.” Then he hung up because he was boarding an Amtrak train.</p><p class="css-at9mc1 evys1bk0">My brief conversation with Mr. Biden prompted a cascade of concern among his top aides. One screamed at me for calling the former president directly. Others texted furiously, trying to figure out how I had obtained Mr. Biden’s phone number.</p></div><aside aria-label="companion column" class="css-ew4tgv"></aside></div><div data-testid="Dropzone-1"></div><div class="css-s99gbd StoryBodyCompanionColumn" data-testid="companionColumn-1"><div class="css-53u6y8"><p class="css-at9mc1 evys1bk0">Mr. Biden had seemed open to continuing the conversation, but my subsequent calls went straight to voice mail. His automated greeting simply said, “Joe.”</p><p class="css-at9mc1 evys1bk0">Two days later, that greeting was replaced by a message from Verizon Wireless: “The number you dialed has been changed, disconnected or is no longer in service.”</p><div class="css-kbghgg"><div class="css-121kum4"><div class="css-171quhb"></div><div class="css-asuuk5"><noscript><div class="css-7axq9l" data-testid="optimistic-truncator-noscript"><svg aria-hidden="true" class="css-1b5b8u1" height="24" viewbox="0 0 24 24" width="24"><path clip-rule="evenodd" d="M2.5 12a9.5 9.5 0 1 1 19 0 9.5 9.5 0 0 1-19 0Zm8.5 1.75v-7.5h2v7.5h-2Zm0 2v2h2v-2h-2Z" fill="currentColor" fill-rule="evenodd"></path></svg><div class="css-6yo1no" data-testid="optimistic-truncator-noscript-message"><p class="css-3kpklk" data-tpl="t">We are having trouble retrieving the article content.</p><p class="css-3kpklk" data-tpl="t">Please enable JavaScript in your browser settings.</p></div></div></noscript><div class="css-1dv1kvn" id="optimistic-truncator-a11y" tabindex="-1"><hr/><p>Thank you for your patience while we verify access. 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