Mueller has reached Trump's inner circle.
The law is closing in on Donald Trump. This morning in Florida his advisor and longtime friend, Roger Stone, was indicted by the FBI in relation to his involvement with the leaking of Hillary Clinton's emails during the 2016 campaign. The Bureau is charging him with making false statements (five of them), obstruction of an official proceeding and tampering with a witness.
Although Stone himself didn't leak any information, nor was he in contact with Wikileaks (even Wikileaks, in a tweet, that "Stone was trolling to attract attention to himself"), he was the go-to guy in the Trump campaign to get information on upcoming leaks. The indictment says:
After the July 22, 2016 release of stolen DNC emails . . . a senior Trump campaign official was directed to contact Stone about any additional releases and what other damaging information [Wikileaks] had regarding the Clinton campaign. Stone thereafter told the Trump campaign about potential future releases of damaging material by [Wikileaks].
There's also information about Stone convincing his friend to lie to a congressional committee with a Godfather II reference:
“Stone told Person 2 that Person 2 should do a ‘Frank Pentangeli’ before [the committee] in order to avoid contradicting Stone’s testimony[...]Frank Pentangeli is a character in the film The Godfather: Part II, which both Stone and Person 2 had discussed, who testifies before a congressional committee and in that testimony claims not to know critical information that he does in fact know.”
Considering that Stone is being used as a legal handhold by Robert Mueller to reach the President, it's important to note that he's got a tattoo on his back of another President who had trouble with the law, Richard Nixon: