Media learned about listening to the Ambassador of Russia FBI employees
Employees of the American intelligence reports that the FBI) tapped phone conversations of Michael Flynn, the national security adviser, Donald Trump, and Russian Ambassador Sergei Kislyak in the US.
However, the FBI did not find anything suspicious in the conversation of the two politicians. But it was not a full-fledged investigation.
Note that the US is now trying to find any clues that would confirm that the Russian intervened in the course of American elections.