As U. S. ambassador to Ukraine, Yovanovitch was the target of a conspiracy-driven smear campaign. Unfounded allegations against her were then made by Trump's personal attorney Rudy Giuliani, as well as conservative commentator John Solomon of The Hill and Ukraine's then-top prosecutor, Yuri Lutsenko, who accused her of being part of a conspiracy involving anti-corruption probes in Ukraine and efforts by the Trump administration to investigate ties between Ukrainian officials and the Hillary Clinton 2016 presidential campaign. Lutsenko, who has been accused by Ukrainian civil society organizations of corruption, claimed that Yovanovitch, an Obama administration appointee, had interfered in Ukraine politics, had given him a "do-not-prosecute" list and was interfering in his ability to combat corruption in Ukraine. The U. S. State Department said that Lutsenko's allegations against Yovanovitch were "an outright fabrication" and indicated that they were a "classic disinformation campaign. " Lutsenko subsequently recanted his claims of a "do-not-prosecute" list. Lutsenko's unfounded allegation was nonetheless amplified by President Trump, his son Donald Trump Jr. , Giuliani, Solomon, and conservative media outlets. Ukrainians who opposed Yovanovitch were also sources for Giuliani, who "was on a months-long search for political dirt in Ukraine to help President Trump. "