Shayanne Gal/Business Insider; Alex Wong/Getty; Jonathan Ernst/Reuters The special counsel Robert Mueller has delivered his final report on the Russia investigation to Attorney General William Barr. It's not yet clear what details the report contains or what will be disclosed to the public. Legal experts say that while "collusion" is not itself an offense specifically denoted in the federal code, it does refer to a host of other federal offenses, including a conspiracy to defraud the United States.