April 21, 2019

Ukraine Reform: Volodymyr Zelensky is elected president of Ukraine.

May 14, 2019

Ukraine Reform: President Trump cancels Vice President Pence’s planned trip to Zelensky’s inauguration.

May 20, 2019

Ukraine Reform: Zelensky inauguration is attended by U.S. delegation led by Secretary Perry.

July 18, 2019

Aid to Ukraine: The Office of Management and Budget suspends military aid to Ukraine under orders from President Trump.

July 21, 2019

Ukraine Reform: Ukraine holds parliamentary elections, President Zelensky’s party wins the majority of seats.

July 25, 2019

Trump Phone Call: President Trump calls President Zelensky and asks him to investigate election interference and the firing of the Ukrainian prosecutor looking into Hunter Biden.

August 12, 2019

Impeachment Inquiry: A whistleblower submits a complaint to the inspector general of the intelligence community.

August 29, 2019

Ukraine Reform: President Zelensky demands the parliament introduce reform legislation at the opening speech of legislature.

August 30, 2019

Aid to Ukraine: Gordon Sondland, Ambassador to the E.U., tells Senator Ron Johnson the aid is being withheld as a quid pro quo for reopening investigations.

August 31, 2019

Aid to Ukraine: Senator Johnson calls President Trump about the quid pro quo, Trump explicitly rejects the claim.

September 9, 2019

Aid to Ukraine: A text message from Sondland says there is no quid pro quo, and the hold is to evaluate whether Ukraine will adopt the reforms.

Impeachment Inquiry: The House Permanent Select Committee on Intelligence is made aware of the whistleblower report.

September 11, 2019

Aid to Ukraine: Aid sent to Ukraine.

September 12, 2019

Impeachment Inquiry: The House Judiciary Committee votes to begin an impeachment inquiry.

September 25, 2019

Impeachment Inquiry: The whistleblower complaint is given to the House Intelligence Committee.

September 26, 2019

Impeachment Inquiry: A partially redacted version of the whistleblower complaint is released to the public.

October 3, 2019

Impeachment Inquiry: The House committees begin interviewing officials regarding the impeachment inquiry.

December 18, 2019

President Trump is Impeached: The House of Representatives voted to approve two articles of impeachment against President Trump. The House voted 230-197-1 (present) to charge Trump with abuse of power and 229-198-1 to charge him with obstruction of Congress.

December 19, 2019

Republican Response: In a speech, Senate Majority Leader Mitch McConnell denounced the “purely partisan impeachment” that he said could “unsettle the foundations of our republic.”

Democrat Delay:  House Speaker Nancy Pelosi said she won’t send the articles to the Senate until the upper chamber finalizes its plans for a trial.

January 15, 2020

House managers file written legal briefs with the Senate.

January 16, 2020

White House legal team files written legal briefs with the Senate.