

Now, it's not at all clear really what laws he would have violated, but they're looking at his communications with Rudy Giuliani and his attempts to influence the 2020 elections to help then-President Trump win a second term. SHUSTER: It seems to be in connection to election interference. Just explain a little why he's being investigated by Brooklyn prosecutors - federal prosecutors.

GROSS: So let's get to Andrii Derkach, who's being investigated by Brooklyn prosecutors. Simon Shuster, welcome back to FRESH AIR. But federal prosecutors in Manhattan are investigating whether Giuliani illegally lobbied on behalf of Ukrainian officials without registering with the Department of Justice, which would be a violation of the Foreign Agents Registration Act. Giuliani is not a subject of the Brooklyn investigation, although some of his contacts are. Derkach and his contacts with Giuliani are the subject of a new article by my guest Simon Shuster, a Time magazine investigative correspondent who worked out of Moscow for many years and has reported extensively on Russian and Ukrainian oligarchs and connections between those oligarchs and Trump allies. One of the Ukrainian officials under investigation is Andrii Derkach, who was described as an active Russian agent by officials in both the Trump and Biden administrations. At the time, Giuliani was President Trump's personal attorney. Last week, The New York Times reported that federal prosecutors in Brooklyn are investigating whether former and current Ukrainian officials tried to interfere in the 2020 election, including by funneling misleading information through Rudy Giuliani.
