President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE assailed the ongoing probes of Russia's role in the 2016 presidential election on Friday, blasting Congress and the Justice Department for continuing the investigations despite not presenting "any proof" of collusion between his campaign and the Kremlin.

After 7 months of investigations & committee hearings about my "collusion with the Russians," nobody has been able to show any proof. Sad! — Donald J. Trump (@realDonaldTrump) June 16, 2017

Reports emerged this week that the government's probe of last year's election has expanded to included possible obstruction of justice in the wake of Trump's abrupt firing of FBI Director James Comey, who was overseeing the agency's investigation.

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The tweet followed the news on Thursday that Vice President Pence had retained an outside attorney to help navigate the law enforcement and congressional probes of Russian election meddling.

The Washington Post also reported on Thursday that special counsel Robert Mueller, who is charged with leading the Justice Department investigation into the matter, was looking into the business dealings and finances of Jared Kushner, Trump's son-in-law and one of his closest advisers.