A summary of a call released by the Trump administration on Wednesday showed that President Donald Trump asked Ukrainian President Volodymyr Zelenskiy to investigate whether former Vice President Joe Biden shut down an investigation into a company that employed his son.
House of Representatives Speaker Nancy Pelosi on Tuesday announced that the Democratic-led House was moving forward with an official impeachment inquiry and directed six committees to proceed with investigations of the president's actions.
Democrats have accused Trump, who is seeking re-election next year, of soliciting Ukraine's help to smear Biden, the front-runner for the Democratic presidential nomination, before the 2020 election.
"There's a lot of talk about Biden's son, that Biden stopped the prosecution and a lot of people want to find out about that, so whatever you can do with the attorney general would be great," Trump said in the call, according to the summary provided by the Justice Department.
"Biden went around bragging that he stopped the prosecution so if you can look into it. ... It sounds horrible to me," Trump said, according to the memo.
The call occurred after Trump had ordered the US government to freeze about $391 million in American aid to Ukraine.
The House inquiry could lead to articles of impeachment in the House that could trigger a trial in the Senate on whether to remove Trump from office.
"The actions of the Trump presidency revealed a dishonorable fact of the president's betrayal of his oath of office, betrayal of our national security and betrayal of the integrity of our elections," Pelosi said on Tuesday.
Trump has withstood repeated scandals since taking office in 2017 and House Democrats had considered, but never moved ahead with, pursuing articles of impeachment over Trump's actions relating to Russian interference in the 2016 US election aimed at boosting his candidacy.
Under the US Constitution, the House has the power to impeach a president for "high crimes and misdemeanors." No president has ever been removed through impeachment. Democrats currently control the House and Trump's fellow Republicans control the Senate.
Biden, who served as US vice president from 2009 to 2013, is the front-runner for the Democratic presidential nomination. Trump is seeking a second four-year term in the November 2020 election.
The United States has been giving military aid to Ukraine since Russia's annexation of Crimea in 2014. The $391.5 million in aid at issue in the current controversy was approved by the US Congress to help Ukraine deal with an insurgency by Russian-backed separatists in the eastern part of the country.
Trump on Sunday acknowledged that he discussed Biden and Biden's son Hunter, who had worked for a company drilling for gas in Ukraine, with Ukrainian President Volodymyr Zelenskiy. Trump on Monday denied trying to coerce Zelenskiy in the July 25 phone call to launch a corruption investigation into Biden and his son in return for the US military aid.
Trump has offered differing reasons for why he wanted the money for Ukraine frozen, initially saying it was because of corruption in Ukraine and then saying it was because he wanted European countries like France and Germany, not the United States, to take the lead in providing assistance to Kyiv.
The current controversy arose after a whistleblower from within the US intelligence community brought a complaint with an internal watchdog relating to Trump's conversation with Zelenskiy. Even though federal law calls for such complaints to be disclosed to Congress, the Trump administration has refused to do so.
Pelosi on Tuesday said Trump's actions had "seriously violated the Constitution," and accused his administration of violations of federal law.
US intelligence agencies and a special counsel named by the Justice Department previously concluded that Russia boosted Trump's 2016 presidential election bid with a campaign of hacking and propaganda aimed at harming his Democratic opponent Hillary Clinton.
By Andy Sullivan and Patricia Zengerle/Reuters
Reporting by Andy Sullivan, Patricia Zengerle