Keep in mind, this misconduct occurred in one of the most politically sensitive and ultimately high-profile investigations in modern American history – at a time when the FBI should have been extraordinarily focused on doing everything by the book.

This raises the question, if the FBI behaved like this in an investigation as consequential as Crossfire Hurricane, how does it behave in other investigations? It turns out that Horowitz wants to know. Because of “the extensive compliance failures . . . . identified in this review,” the inspector general believes “additional OIG oversight work is required to assess the FBI’s compliance with Department and FBI FISA-related policies that seek to protect the civil liberties of U.S. persons.”

While this additional oversight work is welcome, Congress should go further. It should consider meaningful FISA reform. In October, the American Civil Liberties Union and more than 40 other organizations (including organizations on the left and the right) sent a letter to Congress seeking changes to Section 702 of the Foreign Intelligence Surveillance Act that would increase privacy protections for all Americans. Statutory change would represent a concrete, positive step in response to a concrete, defined wrong.