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Explore the timeline of the impeachment inquiry.

Timeline

Key Events in the Impeachment Inquiry

A whistleblower complaint about a July 25 call between President Donald Trump and Ukrainian leader Volodymyr Zelenskiy helped trigger a House of Representatives impeachment investigation of Trump last month.

The explosive August 12 complaint, filed by an unidentified intelligence official detailed to the White House, claimed that during the call Trump “pressured” Zelenskiy to investigate Joe Biden, the leading Democratic presidential candidate, and his son, Hunter Biden, as well as allegations that Ukraine tried to sabotage his 2016 presidential campaign.

Trump and his personal attorney, Rudy Giuliani, were trying to prove that Biden, as vice president under former President Barack Obama, sought to derail an investigation into a Ukrainian natural gas company that had hired Hunter Biden as a highly-paid board member. The complaint portrays Giuliani as a “central figure” in Trump’s efforts and says attorney general William Barr was also involved.

While Trump has defended the 20-minute call as “perfect” and denied he did anything wrong, Democrats claim the president’s entreaties amounted to an abuse of presidential powers against a political opponent, which could serve as a basis for impeaching the president. Trump is the fourth American president in history to face impeachment.

For months, six Democratic-controlled House committees had been investigating Trump for potential misconduct. But after the whistleblower complaint leaked, House Speaker Nancy Pelosi ordered an “official impeachment inquiry” on Sept. 24, dramatically raising the stakes in the political standoff between the Democrats and Trump just as the 2020 presidential campaign kicks into high gear.

Nov. 5, 2019

Sondland revises testimony

Gordon Sondland, the former U.S. ambassador to the European Union, revises his sworn Congressional testimony, acknowledging that he now remembers that U.S. aid to Ukraine was made contingent on Ukraine making a public pledge to investigate corruption. In his Oct. 17 testimony, Sondland had said he did not know why nearly $400 million in military aid to Ukraine had been blocked. Read more…

Nov. 4, 2019

Former Ukraine envoy felt “threatened” by President Trump

In the first of the transcripts of sworn testimony released by House impeachment inquiry investigators, former Ukraine ambassador Marie Yovanovitch said she felt “threatened” by President Donald Trump and feared she would be the subject of retaliation after learning that Trump had told the new president of Ukraine in a July 25 call that Yovanovitch was “bad news” and would “go through some things.” Yovanovitch had been abruptly recalled from Kyiv to Washington in May after being publicly discredited by Rudy Giuliani, the president’s personal lawyer, and conservative media Read more…

Nov. 2, 2019

Documents show Manafort pushed Ukraine conspiracy theory

Newly released Justice Department documents show that as early as 2016 former Trump campaign chairman Paul Manafort was pushing the now-debunked theory that it was Ukraine, not Russia, that had hacked the Democratic National Committee. The theory, widely believed by Trump allies, led the president to press Ukrainian President Volodymyr Zelenskiy to investigate the matter. The documents were released in response to lawsuits filed by CNN and BuzzFeed. Read more…

Oct. 31, 2019

Tim Morrison confirms quid pro quo testimony

Tim Morrison, a former senior National Security Council aide, testifies in the House impeachment investigation of President Donald Trump. Morrison was expected to explain the “sinking feeling” he reportedly got when Trump asked Ukraine to investigate his political rivals. Read more…

Oct. 31, 2019

House Democrats authorize impeachment inquiry

U.S. House of Representatives members vote along party lines to authorize the Democratic-led impeachment inquiry of President Donald Trump. The vote was 232-196, with all Republicans and just two Democrats voting against the impeachment resolution. Read more…

Oct. 29, 2019

Democrats unveil impeachment resolution

House Democrats introduce a resolution that “affirms” the impeachment inquiry of President Donald Trump and establishes the next phase of the process. In a letter to fellow Democrats, House Speaker Nancy Pelosi said she wanted to “eliminate any doubt” about the determination of the inquiry. The House is expected to vote on the resolution on Nov. 1. Read more…

Oct. 29, 2019

Vindman says he was “troubled” by Trump Ukraine call

National security aide Lieutenant Colonel Alexander Vindman says he was so concerned that  President Donald Trump asked Ukraine’s leader to investigate his political opponents that he alerted his superiors. Vindman, a decorated army officer detailed to the National Security Council, was among a group of officials who listened in to Trump’s controversial July 25 phone call with Ukrainian President Volodymyr Zelenskiy. Read more…

Oct. 28, 2019

Kupperman balks at testifying

Former Deputy National Security Adviser Charles Kupperman, who listened in on the July 25 call between President Donald Trump and Ukrainian president Volodymyr Zelenskiy, declined to testify before House committees. Kupperman has been told by the White House that he’s immune from providing testimony and he has filed a lawsuit asking a federal judge whether he would need to testify. Read more…

Oct. 23, 2019

Overhead photograph of U.S. House Republicans speaking to reporters after Deputy Assistant Secretary of Defense Laura Cooper arrived to testify at a closed-door deposition as part of the U.S. House of Representatives impeachment inquiry.

Pentagon official testifies after Republicans storm secure briefing room

Senior Pentagon official Laura Cooper testifies about her efforts to release nearly $400 million in military aid to Ukraine blocked at President Donald Trump’s direction as part of an effort  to pressure Ukraine into investigating the Democrats. Her testimony came five hours after Republican lawmakers stormed a secure room in the House of Representatives where she was set to be interviewed. Read more…

Oct. 22, 2019

Taylor confirms quid pro quo allegation

U.S. ambassador William Taylor tells House investigators he was told President Donald Trump had made U.S. military aid to Ukraine conditional on Ukraine pledging to investigate the Democrats and the 2016 election, according to several news outlets. Taylor provided a detailed account of his recollection of events being investigated by House Democrats as part of their impeachment inquiry into Trump. Read more…

Oct. 17, 2019

Mulvaney acknowledges quid pro quo between Trump and Ukraine

Mick Mulvaney, the acting White House chief of staff, tells reporters President Trump withheld nearly $400 million in military aid partly to pressure Ukraine to pursue an investigation that would benefit Trump politically. He repeatedly acknowledged a quid pro quo central to the House impeachment inquiry. Mulvaney later tried to walk back his remarks that caused an uproar within both parties. Read more…

Oct. 17, 2019

Sondland says Trump outsourced U.S.-Ukraine policy to Giuliani

U.S. Ambassador to the European Union Gordon Sondland tells House Democratic investigators that President Trump had outsourced U.S. policy on Ukraine to the president’s personal attorney, Rudy Giuliani. He said it was a decision he disagreed with but carried out nonetheless. Read more…

Oct. 16, 2019

Fourth person arrested in probe of Giuliani associates

A fourth person has been arrested in connection with federal campaign finance cases involving associates of President Donald Trump’s personal attorney, Rudy Giuliani. Federal authorities said American businessman David Correia was apprehended Wednesday at New York’s Kennedy Airport after flying there to turn himself in. Read more…

Oct. 15, 2019

Former Trump aide says she opposed removal of Ambassador Yovanovitch

Former National Security Council aide Fiona Hill tells House investigators that she strongly opposed the removal of former U.S. ambassador to Ukraine Marie Yovanovitch. Hill also told investigators that former National Security Adviser John Bolton directed her to raise concerns about efforts to pressure Ukraine with White House lawyers. Read more…

Oct. 14, 2019

Hunter Biden stepping down from Chinese company

Hunter Biden, Joe Biden’s son, says he’ll step down from the board of directors of a Chinese private equity firm that he joined while his father was vice president. Hunter Biden made the announcement as part of a pledge not to work for any foreign companies should his father win the presidency. Read more…

Oct. 11, 2019

Giuliani under investigation for lobbying violations, Times reports

The New York Times reports that President Donald Trump’s private lawyer, Rudy Giuliani, is under investigation for possible lobbying violations. Citing an unidentified source, the Times reported that investigators are probing Giuliani’s efforts to have former Ambassador Marie Yovanovitch recalled from Kyiev. Read more…

Oct. 11, 2019

Former U.S. ambassador to Ukraine testifies

Former U.S. ambassador to Ukraine Marie Yovanovitch tells House committees leading the impeachment inquiry that President Donald Trump pressured the State Department to remove her from her post last May following unfounded claims she sought to undermine his policies. Read more…

Oct. 10, 2019

Two Giuliani associates arrested

Two associates of President Donald Trump’s personal attorney, Rudy Giuliani, face federal charges of making hundreds of thousands of dollas in illegal contributions to Republican campaigns, including a pro-Trump super PAC. The two Florida-based businessmen – Lev Parnas and Igor Fruman–allegedly lobbied for the ouster of the former U.S. ambassador to Ukraine. Read more…

Oct. 9, 2019

Biden Calls for Trump’s impeachment

Former vice president Joe Biden for the first time calls for the impeachment of President Donald Trump during a campaign appearance in New Hampshire. Read more…

Oct. 8, 2019

White House says it won’t cooperate with impeachment inquiry

White House counsel Pat Cipollone notifies House Democratic leaders in an eight-page letter that the administration will not cooperate in what it deems the “unconstitutional” impeachment inquiry. Read more…

Oct. 8, 2019

Democrats to subpoena Sondland after White House blocks his testimony

House Democrats say they plan to subpoena Gordon Sondland, the U.S. Ambassador to the European Union,  after the White House barred him from testifying before three House committees investigating President Donald Trump for possible impeachment.  Sonland was scheduled to testify on Tuesday about his role in Trump’s efforts to press Ukraine to investigate former vice president Joe Biden and his son. Read more…

Oct. 6, 2019

Second whistleblower comes forward in impeachment inquiry

A second whistleblower has come forward with firsthand knowledge about President Donald Trump’s dealings with Ukraine. Read more…

Oct. 4, 2019

House Democrats subpoena White House for documents

House Democrats subpoena the White House for documents related to the impeachment inquiry of President Donald Trump. Read more…

Oct. 4,2019

House Democrats subpoena VP Pence for Ukraine-related documents

House Democrats request documents from Vice President Mike Pence related to his contacts with Ukraine. Read more…

Oct. 4, 2019

Volker reveals dozens of texts between U.S.-Ukraine officials

Text messages, released by former U.S. Special Envoy Kurt Volker between U.S. diplomats indicate the Trump administration tried to tie military aid to Ukraine to an investigation into the Bidens. Read more…

Oct. 4, 2019

House questions IG Atkinson over handling of whistleblower complaint

U.S. House Intelligence Committee questions Inspector General Michael Atkinson on his handling of a whistleblower complaint at the heart of President Donald Trump’s impeachment inquiry. Read more…

Oct. 3, 2019

House questions Volker as part of Trump impeachment inquiry

U.S. House committees question former U.S. Special Envoy to Ukraine Kurt Volker for eight hours. Read more…

Oct. 3, 2019

Trump tells China to investigate the Bidens

President Donald Trump openly calls on China, as well as Ukraine, to investigate Joe and Hunter Biden, and dismisses his Democratic opponents as “maniacs” pursuing “impeachment crap.”   Read more…

Oct. 2, 2019

Trump attacks Shiff for leading impeachment inquiry

President Donald Trump steps up his personal attacks on House Intelligence Committee Chairman Adam Schiff, who is spearheading the impeachment probe, saying Schiff should be arrested for “treason” for parodying Trump’s conduct during a hearing. Read more…

Sept. 30, 2019

House orders Giuliani to turn over Ukraine-related documents

House Democratic leaders order President Donald Trump’s personal lawyer, Rudy Giuliani, to turn over Ukraine-related documents by Oct. 15. Read more…

Sept. 28, 2019

Special envoy to Ukraine Volker resigns

U.S. Special Envoy for Ukraine Kurt Volker resigns amid a formal impeachment inquiry of President Donald Trump and his dealings with Ukraine. Read more…

Sept. 27, 2019

House subpoenas Secretary of State Pompeo for Ukraine-related documents

House committees subpoena Secretary of State Mike Pompeo for Ukraine-related documents. Read more…

Sept. 25, 2019

White House releases rough transcript of Trump-Zelenskiy phone call

White House releases a rough transcript of the July 25 phone call between U.S. President Donald Trump and Ukrainian President Volodymyr Zelenskiy in which military aid and the Bidens were discussed. The director of intelligence delivers a whistleblower complaint to Congress. Read more…

Sept. 24, 2019

House Speaker Nancy Pelosi announces the House will begin a formal impeachment inquiry of the president. (AP)

Pelosi announces impeachment inquiry

House Speaker Nancy Pelosi announces the House will begin a formal impeachment inquiry of the president. Read more…

Sept. 19, 2019

IG refuses to discuss whistleblower complaint with House committee

Inspector General Michael Atkinson refuses to discuss the contents of the whistleblower complaint during a closed-door House committee meeting. News reports suggest the allegations focus on Ukraine. Read more…

Sept. 18, 2019

Washington Post reports Trump made promise to foreign leader

The Washington Post reports the whistleblower complaint is about a conversation between President Donald Trump and a foreign leader. Read more…

Sept. 13, 2019

Intelligence committee chairman issues subpoena for complaint

House Intelligence Committee Chairman Adam Schiff issues a subpoena for Acting Director of National Intelligence Joseph Maguire, after Schiff says Maguire has violated the law by not transmitting the complaint to Congress within seven days. Read more…

Sept. 9, 2019

House intelligence committee notified of complaint

Inspector General Michael Atkinson notifies the House Intelligence Committee about an “urgent” and “credible” complaint. Read more…

Aug. 12, 2019

Whistleblower files complaint

The whistleblower complaint is filed with Inspector General Michael Atkinson. Read more…

July 25, 2019

Trump discusses ‘favor’ with Ukranian president

President Donald Trump asks Ukrainian President Volodymyr Zelenskiy for a “favor” while discussing military aid. Read more…

July 24, 2019

Mueller testifies before House committees

Former special counsel Robert Mueller appears before the House Judiciary and Intelligence committees after the two panels issued subpoenas for his testimony. Mueller sticks to the findings of the written report during his testimony. Read more…