Interference is the "essential" (Kirkus Reviews) true history of the most important and consequential decisions, obstacles, and quandaries Mueller and his team faced when investigating Russian interference in the 2016 presidential election. For the first time, Mueller's only deputy, his most senior counselor who served on the Watergate Special Prosecution Force, and the lead prosecutor looking into obstruction of justice and Russian interference, have come together to tell a highly relevant and readable account of their investigation into election interference and the connections between various Russians and members of the 2016 Trump campaign. Mueller himself wrote the book's preface.

Interference highlights the many actions Russia took as it favored candidate Donald Trump over Hillary Clinton, offering a powerful reminder of how committed Russia was to influence the election outcome. Ultimately, the special counsel brought indictments against thirty-four individuals and entities, including Trump's campaign chairman; his deputy campaign chairman; a campaign advisor; his first national security advisor; a longtime Trump associate; and over two-dozen Russian nationals. Every case that was able to proceed to a conclusion resulted in a guilty verdict or plea.

Interference explains the motivations and actions of Russia (which has not stopped exploiting American weaknesses), the importance and limitations of a special counsel, and the urgent need for people to make principled decisions even when being pushed from all directions not to do so. Much can be learned from the experiences faced by Mueller's team as they broke ground on some of the most complicated challenges facing our country--then and now. Their findings are essential to an understanding of America's current struggle to preserve the rule of law and strike the balance between presidential immunity and presidential accountability. The narrative carries special relevance following the Supreme Court's 2024 decision granting broad immunity to a president, a decision that sharply limits the conduct for which a president can be prosecuted--or even investigated.