U.S. House of Representatives
During her testimony before U.S. House investigators last month in the impeachment inquiry against President Donald Trump, Fiona Hill, Trump's former top adviser on Russia and Europe, said that she received death threats and "hateful calls" and was the subject of false "conspiracy theories" as part of a targeted harassment campaign she claims was implemented after she agreed to cooperate with the inquiry, according to a deposition transcript.
Sources: NBC News