Introduction It was Sunday afternoon, March 24, 2019. I was passing through the Lincoln Tunnel in my old gray Subaru, heading toward the soulless thruways that stretch between New York City and Washington, D.C. On the passenger side floor was Innis, my English cocker spaniel, curled up and dozing. His breeder had promised me he was a great travel dog who would easily be lulled to sleep in a moving vehicle, a quality that had come in handy, given my peripatetic lifestyle over the years, ping-ponging between my home in New York and my job at the Department of Justice. The trips had grown increasingly rare, though, as I found myself working around the clock in Washington. As numbing as this drive usually was, this particular trip was wistful. I had spent the past twenty-two months working as a prosecutor for Robert S. Mueller III, leading one of the three main teams in the Special Counsel's Office charged with investigating Russian interference in the 2016 presidential election and coordination between the Russians and the presidential campaign of Donald J. Trump. Two days before, on Friday, March 22, we had finally delivered our report, all 448 pages of it, to the new attorney general, William Barr. We were feeling a note of finality to our collective mission. The Special Counsel's Office had already largely dissolved. We'd said our goodbyes. I was driving back to Washington, one last time, to polish a couple of last "memos to file" and organize the documents in my office for the government archivists who would preserve our papers for posterity. At age sixty-one, after more than twenty years as a federal prosecutor, I would be returning to teach at NYU School of Law as a private citizen in my hometown. After months of speculation, the press now had written confirmation from Barr himself that our report had been submitted and that he would soon be issuing a public statement about it. All weekend, the drumbeat in the media grew louder, as the press and many other Americans who felt invested in our work awaited the attorney general's announcement. Internally, of course, we already knew what the report contained and had not breathed a word of it, true to our no-leak reputation. The special counsel's report was a devastating recitation of how Russian government operatives had infiltrated our electoral process, a conclusion that we all believed to be our most important long-term finding and one that required immediate and decisive action by our political leaders. As to whether any member of the Trump campaign, or anyone else, conspired with the Russians, our report was mixed. We had found insufficient evidence to criminally charge a conspiracy with the Russians beyond a reasonable doubt--the high standard of proof required for any criminal charge and conviction. But the frequency and seriousness of interactions we uncovered between the campaign and the Russians were nevertheless chilling, with Trump campaign officials both receptive to, and soliciting, Russian assistance throughout the summer and fall of 2016. The final question our investigation pursued was whether the president had obstructed justice before or after our office was up and running. The facts here were no less appalling, although we had not indicted the president or, frustratingly, even taken the final leap of putting a label on what the facts added up to. Instead, our report set out numerous episodes that provided clear evidence against the president. However, we were forbidden from indicting him for these crimes, as we were employees of the Department of Justice and bound to follow an internal Department policy that no president could be indicted while in office--whether we agreed with that rule or not. Given this idiosyncratic circumstance, Mueller had decided it would be unfair to say that we found the president had committed a crime, as Trump would not be able to challenge our conclusion in court, at least until he left office. Thus our report laid out the proof of his criminal conduct in detail, but did not give our legal assessment of it--we never said outright that he'd committed a crime. Instead, we had left it to Congress to make its own assessment of our evidence, or to another prosecutor in the future, who would be free to indict the president once he'd left office. We were well aware that this approach would read awkwardly and, frankly, as a transparent attempt to hide our true thoughts. Anyone reading the report as a whole would see that when the evidence did not rise to such a level, we had explicitly said so, including when the conduct was that of the president. By contrast, our silence on whether Trump had obstructed justice--whether the president of the United States had broken the law--would be deafening. When he was not guilty of certain crimes, we said so; and when he was, we were silent. But we had found no other way of dealing with Mueller's decision to abide by the principle of protecting anyone who could not have his or her day in court. I spent most of the five-hour drive to Washington awaiting news of Barr's announcement on the radio. I was listening on my iPhone, as the radio in my car had been on the fritz ever since a mechanic had jump-started my battery improperly around the time I'd joined the Special Counsel's Office, and I'd never found a moment to get it fixed. For hours, there was only endless blather and speculation on air, filling the time. But, late that afternoon, as I drove along the New Jersey Turnpike, that changed: There was real news to report. My ears perked up. The CNN announcers reported that they had their hands on a four-page letter from the attorney general, summarizing the conclusions of our report. This immediately struck me as odd. We knew that only diehards would read the entire report, which was written by lawyers and filled with dense legalese, so we had prepared summaries of our findings, highlighting key conclusions and evidence in both volumes of the report. When Barr announced he would be issuing something public shortly after receiving our report, I had assumed it would be these summaries. That would be the easiest way to get information to the public quickly, as Barr professed he wanted to do, and would not carry any risk of skewing one way or the other what the special counsel had determined. After all, the whole point of appointing a special counsel was to ensure an investigation of the president would be conducted independently, rather than led by the attorney general, a presidentially appointed cabinet member who might, therefore, be beholden to the subject of the probe. But from what I was now hearing, Barr had clearly not taken this approach, as our summaries were much longer than four pages. The voices on the radio then began breathlessly announcing key takeaways from Barr's letter: Mueller had concluded that the Russians had meddled in the 2016 presidential election. Mueller had concluded that there was no evidence of collusion. Mueller had not found that the president obstructed justice, but neither did he find that the president had not obstructed justice. Instead, they explained, the letter claimed that the special counsel had left the obstruction determination to the attorney general--and that Barr, along with his deputy Rod Rosenstein, had concluded that there'd been no obstruction by the president. That was that: Trump was cleared. Excerpted from Where Law Ends: Inside the Mueller Investigation by Andrew Weissmann All rights reserved by the original copyright owners. Excerpts are provided for display purposes only and may not be reproduced, reprinted or distributed without the written permission of the publisher.