 On 23 June 2006, Chaika became Russian prosecutor general, effectively swapping jobs with his predecessor Vladimir Ustinov who took up the post of justice minister.A "Crown prosecutor" (likely a reference to Chaika) was mentioned in an email chain released on 11 July 2017 by the son of then Republican Presidential nominee Donald Trump, Don Jr, in regards to the Russian government and their alleged attempts to provide damaging information during the U.S. Presidential election of 2016.The email thread resulted in the Trump campaign–Russian meeting of June 2016.