The Mueller investigation went up in smoke. Mueller himself resigned.
Recurring pro-Kremlin disinformation narrative about Russian interference in the 2016 US presidential election.
Special Counsel Robert Mueller's investigation decisively concluded that Russia interfered in the 2016 election. Specifically, Mueller's report declared that there were "two main Russian efforts to influence the 2016 election", with the first being the Internet Research Agency's disinformation campaign and social media operations to disrupt the election, and second being the Russian government's hacking operations against the Clinton campaign and Democratic Party organizations. The findings of the Mueller investigation have led to US senators' proposals to extend sanctions on Russia to deter further election meddling attempts.
Mueller's formal resignation as special counsel on 29 May 2019 was wholly expected, coming as a result of the conclusion of the investigation.