House Democrats have begun collecting evidence for their impeachment investigation, which was launched after a whistle-blower complaint said that White House officials believed they had witnessed President Trump abuse his power for political gain.
Congressional investigators have been issuing near-daily requests or subpoenas for documents and witness testimony related to Mr. Trump’s efforts to pressure the president of Ukraine to investigate former Vice President Joseph R. Biden Jr.
Michael Atkinson, the intelligence community inspector general who first notified Congress of the whistle-blower complaint, met privately with the House Intelligence Committee on Friday to discuss how he had determined that the allegations in the complaint were credible.
Steven A. Linick, the State Department’s independent watchdog, provided senior congressional staff members with packets of documents that sent rumours flying on Capitol Hill but did not appear to include any explosive revelations.
The White House was sent a subpoena for a vast range documents after failing to voluntarily comply with multiple requests by House Democrats.
Secretary of State Mike Pompeo was subpoenaed to hand over documents by Friday, Oct. 4, after initial requests were ignored. After Mr. Pompeo revealed that he had been on the call between Mr. Trump and the Ukrainian president, congressional investigators said that he should not be involved in decisions about what documents should be given to the House.
Rudolph W. Giuliani, the president’s personal lawyer, was subpoenaed to hand over documents by Tuesday, Oct. 15. Mr. Trump asked Mr. Guiliani to work with Ukrainian officials to seek damaging information about Mr. Biden and his family.
Vice President Mike Pence was asked to hand over documents that could reveal “any role” he had played in Mr. Trump’s pressure campaign on Ukraine.
The whistle-blower is expected to be interviewed in the House in a way that will protect his anonymity. The Times has reported that he is a C.I.A. officer who was detailed to work at the White House.
Marie L.Yovanovitch, the former U.S. ambassador to Ukraine, was recalled from her post months ahead of schedule.
George Kent is a deputy assistant secretary of state for European and Eurasian affairs overseeing American policy toward Ukraine.
T. Ulrich Brechbuhl, a State Department counselor, listened in on the call between Mr. Trump and the Ukrainian president, according to the whistle-blower complaint.
Gordon D. Sondland, a U.S. ambassador to the European Union, along with Mr. Volker advised Ukrainian leadership about how to “navigate” Mr. Trump’s demands, according to the complaint.
Three Ukrainian-American businessmen received requests for documents and depositions from House Democrats:
Semyon Kislin, another associate of Mr. Giuliani.