Did the whistleblower help arrange phone call between former VP Biden and the former President of Ukraine (Poroshenko) complaining about prosecutors behavior toward Burisma, the Ukrainian gas company where Hunter Biden was a member of the board?

Did the whistleblower participate in an effort by VP Biden to call the President of the Ukraine (Poroshenko) after Burisma owners’ houses were raided by Ukrainian authorities?

Did the whistleblower actively participate in an effort to back Ukrainian officials off a Burisma investigation after U.S. State Department received complaints from Burisma’s American board members?

Did VP Biden talk to Ukrainian President Poroshenko about prosecutors efforts to investigate Burisma, the gas company where Hunter Biden served as a board member?