WASHINGTON: House Democrats announced Tuesday that they would move ahead this week with two articles of impeachment charging President Donald Trump with abuse of power and obstruction of Congress, as they accused him of violating the Constitution by pressuring Ukraine for help in the 2020 election.

Speaking from a wood-panelled reception room just off the floor of the House, Speaker Nancy Pelosi and leaders of six key committees said that Trump’s actions toward Ukraine, and his efforts to block Congress’ attempt to investigate, had left them no choice but to pursue one of the Constitution’s gravest remedies. The move will bring a sitting president to the brink of impeachment for only the fourth time in American history.

“Today, in service to our duty to the Constitution, and to our country, the House Committee on Judiciary is introducing two articles of impeachment charging the president of the United States, Donald J. Trump, with committing high crimes and misdemeanours,” said Rep. Jerrold Nadler, D-NY, the panel’s chairman. He stood before four American flags and a portrait of George Washington.

“Our president holds the ultimate public trust,” Nadler said. “When he betrays that trust and puts himself before country, he endangers the Constitution, he endangers our democracy, and he endangers our national security.”

The announcement comes a day after Democrats summed up the central allegations in their impeachment case against Trump: that he pressured Ukraine to announce investigations into his political rivals while withholding as leverage a coveted White House meeting for its president and $391 million in critical security assistance. His actions, they argued in a lengthy hearing at the Judiciary Committee, had placed the president’s personal political interests above those of the country, threatening the integrity of the election and national security in the process.

After more than two months of investigating the Ukraine matter, and a year of confrontation between the Democratic House and Trump, the impeachment process is now likely to unfold quickly. The Judiciary Committee plans to promptly begin debating the articles as soon as Wednesday, and could vote by Thursday to recommend them to the full House of Representatives for final approval. If the House follows through as expected next week, Trump could stand trial in the Senate early in the new year.

The Judiciary Committee planned to publicly release text of the articles later Tuesday. While individual lawmakers will be able to propose amendments to the articles during this week’s debate and potentially force a committee vote on additional charges, they are not expected to substantively change.

Rep Adam Schiff, D-Calif, the chairman of the Intelligence Committee who oversaw the House’s Ukraine investigation, sought to forcefully dismiss complaints that the House was moving too quickly toward impeachment, a little more than two months after opening their inquiry.

“The argument ‘why don’t you just wait’ amounts to this: Why don’t you just let him cheat in one more election? Why not let him cheat just one more time? Why not let him have foreign help just one more time?”

The Democrats indicated that they would forgo another possible article under discussion in recent weeks that would have charged Trump with obstruction of justice based on his attempts to thwart Robert Mueller’s investigation into his campaign’s ties to Russian election interference in 2016. That decision reflected a calculated move by Democrats to push forward with a narrow case against Trump based on his dealings with Ukraine, after some of their moderate lawmakers in conservative-leaning districts signalled they would not support a broader set of charges.

Though the details differ substantially, the articles of impeachment Democrats outlined Tuesday echo those the Judiciary Committee approved in 1974 charging President Richard M. Nixon with abuse of power, obstruction of justice and contempt of Congress. Nixon resigned before the full House had a chance to vote on the articles, amid clear indications that the charges had broad support from members of both parties.

There is less overlap with the other modern presidential impeachment. In 1998, the House approved impeachment articles charging President Bill Clinton with perjury and obstruction of justice. Two other counts, of perjury and abuse of power, failed in votes on the House floor. It was that kind of split decision that Democratic leaders are determined to avoid this time around.

With all but a handful of House Republicans firmly united behind Trump, the charges they have settled on are all but certain to face monolithic Republican opposition. If that does not change, and Trump continues a defiant defence, the impeachment vote against him could take place strictly along party lines, save for one independent, Rep. Justin Amash of Michigan, who has signalled he will join Democrats.

The impeachment effort would also face an uphill battle in the Republican-controlled Senate, where it would take the support of two-thirds of the chamber to convict Trump and remove him from office — a highly unlikely scenario, particularly in an election year.

A little more than an hour before Democrats’ announcement, Trump declared on Twitter that it was “sheer Political Madness” to impeach a president who has done “NOTHING wrong” and overseen “perhaps the strongest economy in our country’s history.”