Trump campaign associates 'materially impaired' investigation by lying, Mueller says

Special counsel Robert MuellerRobert (Bob) Swan MuellerThis week: Mueller dominates chaotic week on Capitol Hill Top Republican considered Mueller subpoena to box in Democrats Kamala Harris says her Justice Dept would have 'no choice' but to prosecute Trump for obstruction MORE's final report about the investigation into Russian interference in the 2016 election said Trump campaign associates "materially impaired" the investigation by lying.

The report makes the statement as it details the reasons why criminal charges were not brought against anyone in regards to collusion. The report said there was insufficient evidence to charge any member of the Trump campaign with conspiring with the Kremlin to influence the election. 

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But it also states that several Trump associates' lies to the special counsel's office and to Congress "impaired" the team's efforts to probe Russia's election interference. 

"[T]he investigation established that several individuals affiliated with the Trump Campaign lied to the Office, and to Congress, about their interactions with Russian-affiliated individuals and related matters," Mueller's report said. "Those lies materially impaired the investigation of Russian election interference."

"The Office charged some of those lies as violations of the federal false statements statute," the report states, before citing instances of ex-Trump officials pleading guilty to making false statements to investigators. 

Former national security adviser Michael Flynn pleaded guilty to lying about his interactions with a Russian ambassador to the U.S. during the transition period. Trump's former lawyer, Michael CohenMichael Dean CohenWill Democrats be up to the task of publicly interviewing Mueller? A question for Robert Mueller Key numbers to know for Mueller's testimony MORE, pleaded guilty to making false statements to Congress about efforts to build a Trump Tower in Moscow. 

Former campaign adviser George Papadopoulos and former campaign chairman Paul ManafortPaul John ManafortHow Mueller deputy Andrew Weissmann's offer to an oligarch could boomerang on DOJ Ukrainian officials and Giuliani are sharing back-channel campaign information: report Key numbers to know for Mueller's testimony MORE also pleaded guilty to making false statements to investigators. 

Mueller wrapped up his 22-month-long investigation into Russian interference and whether the Trump campaign colluded with Moscow in March. 

The investigation did not establish that collusion occurred. 

"Although the investigation established that the Russian government perceived it would benefit from a Trump presidency and worked to secure that outcome, and that the Campaign expected it would benefit electorally from information stolen and released through Russian efforts, the investigation did not establish that members of the Trump Campaign conspired or coordinated with the Russian government in the election interference activities," the report said.

The report, which is more than 400 pages long, noted that Mueller was was unable to “conclusively" determine that no criminal conduct occurred in regards to obstruction of justice. 

"While this report does not conclude that the President committed a crime, it also does not exonerate him,” the report states