President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE blamed former President Obama for Russian meddling in the 2016 election in the aftermath of special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE’s report, saying the previous administration took insufficient action to prevent the interference.

“Anything the Russians did concerning the 2016 Election was done while Obama was President. He was told about it and did nothing! Most importantly, the vote was not affected,” Trump tweeted Thursday evening.

Anything the Russians did concerning the 2016 Election was done while Obama was President. He was told about it and did nothing! Most importantly, the vote was not affected. — Donald J. Trump (@realDonaldTrump) April 18, 2019

Mueller’s report detailed a complex, two-pronged effort by Moscow in which Russian agents sought to exacerbate political fault lines on social media with divisive posts through the Kremlin-linked Internet Research Agency and hacked and sought to disseminate Democratic documents and emails in an effort to embarrass Hillary Clinton Hillary Diane Rodham ClintonDemocratic groups using Bloomberg money to launch M in Spanish language ads in Florida The Hill's Campaign Report: Presidential polls tighten weeks out from Election Day More than 50 Latino faith leaders endorse Biden MORE, the Democratic presidential nominee.

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The report also revealed that Russian officials made several outreaches to Trump campaign officials, though the special counsel could not prove any Trump associates coordinated with any efforts to interfere in the 2016 race.

“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 its election interference activities,” Mueller wrote in his report.

Obama has faced some criticism for how his administration handled Russian interference once he was made aware of the efforts.

"I think the [Obama] administration needed to call out Russia earlier, needed to act to deter and punish Russia earlier,” Rep. Adam Schiff Adam Bennett SchiffPelosi, Democrats unveil bills to rein in alleged White House abuses of power Chris Matthews ripped for complimenting Trump's 'true presidential behavior' on Ginsburg Trump casts doubt on Ginsburg statement, wonders if it was written by Schiff, Pelosi or Schumer MORE (D-Calif.), then the ranking member of the House Intelligence Committee, said in a 2017 CNN interview.

Reports have emerged that Obama did not take public action against Moscow for fear of injecting further partisanship in the 2016 election.