A total of thirty-four individuals and three companies were indicted by Mueller's investigators. Eight have pleaded guilty to or been convicted of felonies, including five Trump associates and campaign officials. None of those five convictions "involved a conspiracy between the campaign and Russians" and "Mueller did not charge or suggest charges for [...] whether the Trump campaign worked with the Russians to influence the election". The investigation was, however, more complex. On May 29, 2019, In a press conference, Mueller stated that "If we had confidence that the president clearly did not commit a crime, we would have said that. We did not, however, make a determination as to whether the president did commit a crime... A president cannot be charged with a federal crime while he is in office. That is unconstitutional. Even if the charge is kept under seal and hidden from public view – that too is prohibited."
Dozens of ongoing investigations originally handled by the Special Counsel's office were forwarded to district and state prosecutors, other Department of Justice (DoJ) branches, and other federal agencies.The following (in alphabetical order) were indicted during the Mueller investigation:
13 Russians implicated in election interference: Mueller's team indicted thirteen Russian citizens and three Russian entities, including the Internet Research Agency (IRA), for conducting social media campaigns about the U.S. elections, and twelve members of the Russian GRU cyber espionage group known as Fancy Bear, for hacking and leaking DNC emails in June 2018. The other Russian indicted who was not a direct employee of Fancy Bear was Russian business tycoon Yevgeny Prigozhin, who was alleged to have served as the financier for the organization.
Maria Butina, who had claimed to be a Russian gun activist, was investigated by the Special Counsel investigators and then prosecuted by the National Security Law Unit. She was imprisoned for espionage after entering a guilty plea.
Michael Cohen, Trump's personal lawyer, pled guilty to making hush payments to Stormy Daniels and Karen McDougal in violation of campaign finance laws, and was convicted for several unrelated counts of bank and tax fraud.
Lieutenant General Michael Flynn, who had been appointed as National Security Advisor by the incoming Trump administration, was dismissed from his position and later pled guilty to making false statements to FBI investigators about his conversations with Russian ambassador Sergey Kislyak during the presidential transition.
Konstantin Kilimnik, Manafort's business partner in Ukraine, was indicted for witness tampering at the behest of Manafort; Kilimnik is suspected of working for Russian intelligence.
Paul Manafort, former Trump campaign chairman was found guilty on eight felony counts of tax evasion and bank fraud, pursuant to his earlier lobbying activities for the Party of Regions of former Ukrainian president Viktor Yanukovich. He later pled guilty to conspiracy to defraud and obstruction of justice; in total, he was sentenced to over seven years in jail in February 2018.
George Papadopoulos Trump campaign adviser was convicted for making false statements to the FBI.
Roger Stone, a longtime Trump advisor who had met with a Russian person offering to sell derogatory financial information about Hillary Clinton, was indicted on seven charges of lying to Congress and witness tampering. He pled not guilty. The jury subsequently found him guilty on all seven counts.