Robert Mueller opened his testimony by going over his investigation into Russian interference in the 2016 presidential election.
He said his investigation found that the "Russian government interfered in our election in sweeping and systematic fashion."
Mueller continued:
"Second, the investigation did not establish that members of the Trump campaign conspired with the Russian government in its election interference activities. We did not address 'collusion,' which is not a legal term. Rather, we focused on whether the evidence was sufficient to charge any member of the campaign with taking part in a criminal conspiracy. It was not. Third, our investigation of efforts to obstruct the investigation and lie to investigators was of critical importance. Obstruction of justice strikes at the core of the government’s effort to find the truth and to hold wrongdoers accountable."