William B. Taylor Jr., acting ambassador to Ukraine, testified on Nov. 13 in the first open hearing of the impeachment inquiry about a July phone call between President Trump and U.S. ambassador to the European Union Gordon Sondland that was overheard by a member of Taylor’s staff in which Trump purportedly asked about “the investigations.”
Ukraine-U.S. Relations
Washington Post: Trump asked EU ambassador about status of Ukrainian ‘investigations’ (Live Updates)

Charge d'Affaires at the US embassy in Ukraine Bill Taylor (L) and Deputy Assistant Secretary of State for Europe and Eurasia George Kent (R) are sworn in to testify before the House Permanent Select Committee on Intelligence hearing on the impeachment inquiry into US President Donald J. Trump, on Capitol Hill in Washington, on Nov. 13, 2019.