"But there’s a problem with the suggestion that Biden was trying to help his son. The investigation into Burisma was dead long before Biden started his campaign to oust Shokin, Vitaliy Kasko, a former Ukrainian official who worked under Shokin, told Bloomberg. 'There was no pressure from anyone from the U.S. to close cases against Zlochevsky,' Kasko said in an interview last week. 'It was shelved by Ukrainian prosecutors in 2014 and through 2015.' Kasko’s assessment adds a wrinkle to one of the first political intrigues of the 2020 election season. It undercuts the idea that Biden, now a top Democratic presidential candidate, was seeking to sideline a prosecutor who was actively threatening a company tied to his son. Instead, it appears more consistent with Biden’s previous statements that he was pressing for the removal of a prosecutor who was failing to tackle rampant corruption."