Who’s the staffer?
CNN’s lede.
https://www.cnn.com/2019/11/13/politics/public-impeachment-hearings-day-1/index.html
Diplomat testifies EU ambassador said Trump’s interest in Ukraine was ‘investigations of Biden’
Taylor testified that an aide told him of a phone conversation Trump had with US Ambassador to the European Union Gordon Sondland on July 26, one day after Trump’s phone call with Ukrainian President Volodymyr Zelensky. Taylor’s aide, who was accompanying Sondland to meetings in Kiev with Ukrainian officials, could hear Trump asking Sondland about the investigations, Taylor testified. Sondland “told President Trump that the Ukrainians were ready to move forward,” Taylor said.
Taylor testified that his aide later asked Sondland what Trump thought of Ukraine.
“Ambassador Sondland responded that President Trump cares more about the investigations of Biden, which (Trump personal attorney Rudy) Giuliani was pressing for,” Taylor said.