In December 2019, National Security Advisor chief Robert O'Brien conveyed concerns to President Trump that Giuliani was being targeted by a Russian disinformation campaign aimed at discrediting Joe Biden, current and former advisors in the Trump administration told CBS News' Paula Reid.
Giuliani's meeting with the Ukrainian lawmaker - Andriy Derkach - was one of the reasons for those concerns.
The Treasury Department leveled
sanctions against Derkach in September, describing him as an "active Russian agent" who has done the Kremlin's bidding for more than a decade.
Derkach and Giuliani
met in Ukraine last December at the height of the impeachment saga, as Giuliani worked to uncover damaging information about Hunter Biden.
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