The following is a brief and by no means exhaustive timeline and chronology of events. I will attempt to keep this as up to date as possible.
Early 2018 - Former Ukrainian officials and Trump associates conspired to have U.S. Ambassador to Ukraine, Marie Yovanovitch, ousted.
June 2018 - Lev Parnas made massive illegal campaign contributions in an attempt to influence Yovanovitch's ousting.
Dec 2018 - Representative, and current minority ranking member on the House Intelligence Committee and key defendant against the Trump impeachment inquiry, met former Ukrainian chief prosecutor Viktor Shokin with the intention to pursue information about the son of 2020 Democratic candidate Joe Biden. Hunter Biden was on the board of Burisma Holdings, a Ukrainian oil company.
May 2019 - President Trump, and his personal lawyer, Rudy Giuliani, were on with Lev Parnas to pressure the Department of State and the Ukrainians to investigate Biden and son.
May 2019 - Lev Parnas claims he advised Zelenskyy's associates that Trump would withhold the military aid unless he announced he would begin the requested investigations.
May 20, 2019 - U.S. Ambassador to Ukraine, Marie Yovanovitch, was ousted for allegedly not pressuring Ukraine to investigate the Bidens.
July 3, 2019 - President Trump orders a hold on military aid funding. This $391 million in funding was previously approved by the Department of Defense, the Department of State, and codified into law to be dispersed to Ukraine. President Trump provided no explanation to Ukraine or the U.S. diplomats why the funds were withheld.
July 10, 2019 - Ambassador to the European Union, Gordon Sondland, informed Ukraine that a visit to the White House by president Zelenskyy was predicated on announcing the investigation into Burisma, the company Hunter Biden was on the board of.
July 2019 - Kurt Volker, a special envoy to Ukraine, texted Zelenkskyy's top adviser. “assuming President Z convinces Trump he will investigate . . . we will nail down date for visit to Washington.” The Ukrainian official agreed.
July 25, 2019 - The now infamous Trump-Zelenskyy phone call. On this call, Trump made several requests of Zelenskyy to investigate Biden, Burisma, and CrowdStrike. Trump alleges CrowdStrike (a U.S. company founded by a Ukrainian that looked into the 2015 and 2016 Democratic National Committee cyber attacks) worked with Ukraine to interfere with the 2016 election against him. He also alluded to how much the U.S. helped Ukraine when Ukraine doesn't often help the U.S.
July 26, 2019 - A top aide to president Zelenskyy informed Ambassador Gordon Sondland that they would commence with the investigations.
Aug 12, 2019 - A whistleblower filed a complaint stemming from the July 25th phone call between Trump and Zelenskyy alleging that President Trump abused his power by instigating a foreign nation to investigate a political rival. The whistleblower also suggested the White House began to cover it up because the transcript of the call was stored in an archive designated for national security purposed rather than the one typically used for regular presidential phone communications. The whistleblower also made connections between this phone call and Rudy Giuliani's work to pressure Ukraine to investigate the Bidens.
Sept 1, 2019 - Ambassador Sondland again informed Ukraine that the military aid would be withheld unless a public statement is made regarding the investigations.
Sept 7, 2019 - Ambassador Sondland claims that he was told by President Trump that President Zelenskyy himself must be the Ukrainian official that announces the investigations. Zelenskyy agreed and contacted CNN to make the announced with host Fareed Zakarai on Sept 13.
Sept 9, 2019 - The investigations begin...but not the Ukrainian investigation. The House Intelligence, Foreign Relations and Oversight Committees begin investigating President Trump and Rudy Giuliani.
Sept 11, 2019 - Trump orders the release of the military aid to Ukraine. He nor the White House has provided an explanation for the hold or the release.
Sept 13, 2019 - The planned CNN statement by Zelenskyy is called off for a later date.
Sept 21, 2019 - The whistleblower complaint is leaked to the media.
Sept 24, 2009 - The House investigations are upgraded into an official impeachment inquiry by Speaker of the House Nancy Pelosi.
Sept 25, 2019 - The White House releases a summarized memorandum of the Trump-Zelenskyy phone call. The House and the Senate both voted unanimously for the White House to make the whistleblower complaint available to Congress.
Sept 26, 2019 - Congress publicly releases the whistleblower complaint.
Oct 3, 2019 - Special envoy to Ukraine Kurt Volker is interviewed by the House Foreign Affairs Committee. He provides the text messages from July 2019. It is leaked that Ambassador Yovanavitch was fired because she personally blocked the Biden investigation and had bad-mouthed President Trump. Trump also demands Ukraine investigate the Bidens during a press conference.
October 2019 - The House Committee on Oversight announces several subpoenas from White House staff.
Oct 8, 2019 - White House announces it will not comply with congressional subpoenas. Ironically itself an impeachable offense as was the case for President Richard Nixon.
October 2019 - 13 private bipartisan interviews and depositions with Trump administration officials were carried out.
Oct 31, 2019 - The official Impeachment Resolution passes which establishes the official nature, rules and procedures for the impeachment process.
Nov 13, 2019 - The House Intelligence Committee conducted several public hearings.
Dec 03, 2019 - The House Intelligence Committee voted to submit their impeachment report to the Judiciary Committee. The report was made public.
Dec 04, 2019 - Judiciary Committee held public hearings with legal scholars to establish Constitutional grounds for impeachment.
Dec 10, 2019 - The Judiciary Committee announced they will file two Articles of Impeachment on Dec 12th.
Dec 13, 2019 - The Judiciary Committee voted on the Articles of Impeachment to be included in the final House of Representatives vote later on.
Dec 16, 2019 - The Judiciary Committee released a 658 page report detailing the Articles of Impeachment.
Dec 18, 2019 - The full House will vote on the Articles of Impeachment. *
* - Planned events.Last edited by SpokenTruth - on 16 December 2019
Massimus - "Trump already has democrat support."