Lawmakers on the House Rules Committee heard closing arguments Tuesday on the merits of Democrats’ articles of impeachment against President Trump Donald John TrumpBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Pelosi: Trump Supreme Court pick 'threatens' Affordable Care Act MORE, marking the last debate before the full House is set to take up the historic vote.

The impeachment debate, which follows the curvatures of previous dueling Democratic and GOP claims about the propriety of Trump’s dealings with Ukraine, provided a new cast of Democratic and Republican lawmakers the opportunity to amplify their views before the rolling television cameras.

The top Democrat and Republican on the House Judiciary Committee were expected to kick off the hearing by going toe-to-toe in debating the merits of the two impeachment articles — abuse of power and obstruction of Congress — that the panel approved in a party-line vote last week. But an unexpected family emergency led Judiciary Chairman Jerrold Nadler Jerrold (Jerry) Lewis NadlerDemocrats shoot down talk of expanding Supreme Court Schumer: 'Nothing is off the table' if GOP moves forward with Ginsburg replacement Top Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence MORE (D-N.Y.) to miss the hearing.

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Rather, Rep. Jamie Raskin Jamin (Jamie) Ben RaskinOVERNIGHT ENERGY: House passes sweeping clean energy bill | Pebble Mine CEO resigns over secretly recorded comments about government officials | Corporations roll out climate goals amid growing pressure to deliver On The Money: House panel pulls Powell into partisan battles | New York considers hiking taxes on the rich | Treasury: Trump's payroll tax deferral won't hurt Social Security House panel pulls Powell into partisan battles over pandemic MORE (D-Md.), a constitutional lawyer, found himself propelled into the high-profile role of defending Democrats' view that Trump should be removed from office for seeking to recruit a foreign power to hurt a 2020 political rival’s campaign.

"The president's continuing course of conduct constitutes a clear and present danger to democracy in America. We cannot allow this misconduct to pass. It would be a sellout of our Constitution, our foreign policy, our national security and our democracy," Raskin said in his opening remarks.

He battled against the claims of Rep. Doug Collins Douglas (Doug) Allen CollinsDemocrats ramp up pressure on Lieberman to drop out of Georgia Senate race The Hill's Campaign Report: Biden on Trump: 'He'll leave' l GOP laywers brush off Trump's election remarks l Obama's endorsements GOP, Democrats look to galvanize women with SCOTUS fight MORE (Ga.), the top Republican on the Judiciary panel, who railed against the “sham” impeachment process as an unfair partisan-driven effort designed to remove Trump from office because Democrats cannot beat him at the ballot box.

In particular, Collins warned that the decisions made this week will have lasting consequences.

“There will be a day of reckoning. The calendar and the clock will continue. But what you do here, and how we have trashed the process in getting here will live on,” Collins said.

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And the process is not limited to the 13 members of the panel and the two Judiciary representatives. Any lawmakers outside the committee will be able to put forward an amendment to the articles, which means there is a long list of members who can argue for or against their merits.

With that in mind, Democrats have anticipated that Republicans will offer multiple amendments designed to alter or eliminate the impeachment articles, though none of those proposals are expected to pass, as every Democrat on the Rules panel has already endorsed both articles.

The Rules Committee hearing comes shortly after two other House panels — Intelligence and Judiciary — moved through the fact-finding part of the nearly three-month inquiry to the drafting and debate over the articles of impeachment.

Democrats say Trump pressured Ukrainian President Volodymyr Zelensky to open two politically motivated investigations, including into former Vice President Joe Biden Joe BidenBiden says voters should choose who nominates Supreme Court justice Trump, Biden will not shake hands at first debate due to COVID-19 Joe Biden should enact critical government reforms if he wins MORE and interference in 2016 presidential election.

In particular, they allege that he used the promise of a White House meeting and nearly $400 million in congressionally approved U.S. aid as leverage to get Zelensky to make a public commitment to the probes.

The full House vote set for Wednesday could make Trump the third president in the nation’s history to be impeached, and it is expected to be approved largely along party lines.