"The indictments allege, and the other activities in our report describe, efforts to interfere in our political system. They needed to be investigated and understood, and that is among the reasons why the Department of Justice established our office. That is also a reason we investigated efforts to obstruct the investigation. The matters we investigated were of paramount importance. It was critical for us to obtain full and accurate information from every person we questioned. When a subject of an investigation obstructs that investigation, or lies to investigators, it strikes at the core of the government's effort to find the truth and hold wrongdoers accountable."