(CNN) It's been just seven days since the White House released a rough transcript of President Donald Trump's July 25 call with the Ukrainian president. In that time, a scandal that started out focused on just Trump and his lawyer Rudy Giuliani has engulfed other top administration officials, including Attorney General Bill Barr and Secretary of State Mike Pompeo.

The drama all stems from a whistleblower complaint filed in August. The intelligence community inspector general, a Trump appointee named Michael Atkinson , notified House Intelligence Chairman Adam Schiff of an "urgent concern" that the acting Director of National Intelligence Joseph Maguire had overruled. Three House committees launched an investigation of efforts by Trump , Giuliani and others to pressure the Ukrainian government to assist the President's reelection efforts by investigating former Vice President Joe Biden and his son, Hunter. There is no evidence of wrongdoing by either Biden.

House Speaker Nancy Pelosi opened an impeachment inquiry on September 24. "The actions taken to date by the president have seriously violated the Constitution," she said, adding "no one is above the law." The White House released the transcript of the call, which Trump continues to call "perfect," in an effort to squelch the ballooning controversy.

Here's what happened next:

The White House releases its transcript of Trump's call with Zelensky and it seems to verify reports of Trump pressuring Zelensky. Trump meets with the Ukrainian President at the United Nations General Assembly and Zelensky says he didn't feel pressure. The whistleblower's complaint is delivered to Capitol Hill and the whistleblower tentatively agrees to meet with congressional lawmakers. The list of House Democrats in support of opening an impeachment inquiry tops 200. Utah Sen. Mitt Romney is among the few Republicans to say he is concerned with Trump's behavior

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September 26: The whistleblower The whistleblower complaint is declassified and released . It repeatedly mentions Rudy Giuliani and Attorney General William Barr. The acting DNI briefs the House Intelligence Committee, defends his decision not to give Congress the whistleblower complaint earlier and also defends the whistleblower. Vermont's moderate governor , Phil Scott, becomes the first high-profile elected Republican to back an impeachment inquiry.

September 28: The Washington Post reports an intensifying probe of Hillary Clinton's emails is underway at the State Department. The Washington Post reports an intensifying probe of Hillary Clinton's emails is underway at the State Department. Trump lashes out at Democrats leading impeachment effort , calling them "savages." Among those encouraging Trump to release the transcript of the phone call was Senate Majority Leader Mitch McConnell of Kentucky.

September 29: Appearing on talk shows, Republican supporters of Trump argue there is nothing wrong with Trump asking foreign leaders for help investigate Biden. White House adviser Stephen Miller alleges on Fox News Sunday the whistleblower is a "deep state operative," signaling more direct attacks by the White House against the whistleblower.

September 30: The New York Times reports that in addition to pressuring Ukraine to investigate Biden, The New York Times reports that in addition to pressuring Ukraine to investigate Biden, Trump had asked Australia and other countries to help Barr with his probe of US intelligence agencies. McConnell says if the House impeaches Trump, the Senate would in fact take the matter up.

October 1: Trump says the whistleblower is Trump says the whistleblower is part of a "COUP" effort and directly targets the whistleblower, saying he wants to "interview" him or her. The State Department inspector general tells senior congressional aides he has information to give them and calls an urgent briefing. Iowa Sen. Charles Grassley, the longest-serving sitting Republican senator and a champion of government oversight and whistleblower protections, sticks up for whistleblowers in a subtle rebuke of the White House.