Roman must have been enjoying himself not knowing he's being watched. According to the report he was arrested in Los Angeles airport. I'm sure he got flagged at whatever country he boarded his flight from but they just wanted him to land on US soil so that they could arrest him.
Even if we assume he was not connected to Bitcoin fog at all, when you admit these:
Sterlingov says he “can’t remember” if he created Bitcoinfog.com and points out that he worked at the time as a web designer for a Swedish marketing company, Capo Marknadskommunikation
and
He concedes that he did send and receive payments to Bitcoin Fog as a user of the service seeking privacy, but says he didn’t use his bitcoins for anything illegal. “I think some of my transfers must have gotten mixed up with everything," he says.
and you have done so for millions, why the hell do you go to the States?
I don't get it, I didn't understand that for others who did live there, like James Zhong.
For god's sake you know the feds are waiting for just one thing to grab you and with double citizenship you just venture there?
Another reason that I can think of why they've taken so long doing this is to probably get those customers too and not just the service providers, that way they're getting more people in this money laundering operation.
They waited for Ilya Lichtenstein
https://www.ccn.com/news/ilya-lichtenstein-bitcoin-fog/