> In 2015, Shokin became the prosecutor general, inheriting the investigation. The Obama administration and other governments and non-governmental organizations soon became concerned that Shokin was not adequately pursuing corruption in Ukraine, was protecting the political elite, and was regarded as "an obstacle to anti-corruption efforts".[24] Among other issues, he was slow-walking the investigation into Zlochevsky and Burisma and, according to Zlochevsky's allies, using the threat of prosecution to try to solicit bribes from Mr. Zlochevsky and his team – to the extent that Obama officials were considering launching their own criminal investigation into the company for possible money laundering.[38]
Decry Wikipedia if you'd like, but this is easily verifiable from any number of other outlets.
[0] https://en.wikipedia.org/wiki/Viktor_Shokin#Failure_to_prope...