The House impeachment managers accused former President Donald Trump of "the most grievous constitutional crime ever committed by a President" in a Monday brief before Trump's Senate impeachment trial begins in earnest Tuesday.
Their brief – technically a reply to the Trump team's answer to the article of impeachment – follows the submission by Trump's lawyers of their full pre-trial brief earlier Monday.
The House managers in their brief most prominently counter the two main defenses that Trump's legal team has put forth – that the Senate cannot constitutionally hold an impeachment trial for a former president and that Trump's conduct was protected by the First Amendment.
The impeachment managers generally fall back on arguments they made in their full pre-trial brief submitted last week on the issue of whether the Senate has jurisdiction to try an impeachment of a former president.
TRUMP LAWYERS RAIL AGAINST IMPEACHMENT TRIAL AS 'POLITICAL THEATER' ON EVE OF PROCEEDINGS
"The Framers’ intent, the text of the Constitution, and prior Congressional practice all confirm that President Trump must stand trial for his constitutional crimes committed in office," the brief reads. "There is no 'January Exception' to the Constitution that allows Presidents to abuse power in their final days without accountability."
Of Trump's First Amendment defense, the impeachment managers said that the argument from the president's lawyers is "utterly baseless."
"President Trump’s incitement of insurrection was itself a frontal assault on the First Amendment. As a matter of law and logic – not to mention simple common sense – his attempted reliance on free speech principles is utterly baseless," the brief says. "[T]o be clear, this is not a case about 'protected speech.' The House did not impeach President Trump because he expressed an unpopular political opinion. It impeached him because he willfully incited violent insurrection against the government."
The impeachment managers also address Trump's false claims that he won the election, which Trump's lawyers defended in a filing last week as impossible to prove "accurate or not."
"Insufficient evidence exists upon which a reasonable jurist could conclude that the 45th President’s statements were accurate or not, and he therefore denies they were false," Trump's lawyers said.
TRUMP IMPEACHMENT CONVICTION? ZERO CHANCE, REPUBLICANS SAY, AS DEMS MOVE FORWARD WITH CASE
The House managers shot back Monday: "To call these responses implausible would be an act of charity. President Trump's repeated claims about a 'rigged' and 'stolen' election were false, no matter how many contortions his lawyers undertake to avoid saying so. When President Trump demanded that the armed, angry crowd at his Save America Rally 'fight like hell' or 'you're not going to have a country anymore,' he wasn't urging them to form political action committees about 'election security in general.'"
Rep. Jamie Raskin, D-Md., is the lead impeachment manager representing the House in the Senate.
Instead of acting to heal the nation, or at the very least focusing on prosecuting the lawbreakers who stormed the Capitol, the Speaker of the House and her allies have tried to callously harness the chaos of the moment for their own political gain
Trump's defense team previewed its strategy in a pre-trial brief Monday, slamming the impeachment effort as "political theater."
"Instead of acting to heal the nation, or at the very least focusing on prosecuting the lawbreakers who stormed the Capitol, the Speaker of the House and her allies have tried to callously harness the chaos of the moment for their own political gain," the brief says.
The Trump team brief also says that Trump's comments at the Jan. 6 rally that he held ahead of Congress' meeting to certify the result of the presidential election, do not comport with the Democrats' narrative that he incited the crowd to storm the Capitol.
"Mr. Trump spoke for approximately one hour and fifteen minutes. Of the over 10,000 words spoken, Mr. Trump used the word 'fight' a little more than a handful of times and each time in the figurative sense that has long been accepted in public discourse when urging people to stand and use their voices to be heard on matters important to them; it was not and could not be construed to encourage acts of violence," Trump's brief says.
LIVE UPDATES: REPUBLICANS WHO VOTED FOR TRUMP IMPEACHMENT FACE BACKLASH AT HOME
The Senate trial technically started weeks ago when the impeachment managers transmitted the article of impeachment against Trump to the Senate, but Senate Minority Leader Mitch McConnell, R-Ky., and Majority Leader Chuck Schumer, D-N.Y., struck a deal to put off the main in-person hearings so the Senate could immediately address critical nominations to President Biden's Cabinet.
That deal included two rounds of briefs from Trump's legal team and the impeachment managers – one last week and one Monday. Now, a deal for how to conduct the in-person hearings is circulating in the Senate. That deal would allow for four hours of debate on whether the trial is constitutional on Tuesday before a vote on "constitutionality."
It would also allow the trial to pause at 5 p.m. Friday at the request of Trump lawyer David Schoen, who observes the Jewish Sabbath. The trial would then resume on Sunday.
Traditionally, the Senate hears impeachments six days per week and takes Sundays off. This would effectively switch the off day from Sunday to Saturday.
The Senate will gavel in at 1 p.m. Tuesday with Senate President Pro Tempore Patrick Leahy, D-Vt., presiding.
CLICK HERE TO GET THE FOX NEWS APP
The House impeached Trump on Jan. 13, one week after a pro-Trump mob stormed the Capitol as lawmakers and former Vice President Mike Pence were meeting in a joint session to certify the result of the presidential election. The mob forced a lockdown of the Capitol about one hour after Trump's remarks concluded and later breached and ransacked the building as hundreds of lawmakers and Pence were forced into hiding.
It's highly unlikely that impeachment managers will secure a conviction of the former president, which could result in him being barred from holding office in the future. Last month Sen. Rand Paul, R-Ky., raised a point of order claiming the impeachment trial is unconstitutional because Trump is no longer in office.
Forty-five Republicans voted that it is, meaning that at least 12 would have to change their mind on that issue for impeachment managers to even have a chance at reaching the 67-vote threshold to convict Trump.
Fox News' Kelly Phares and Chad Pergram contributed to this report.