The call for gun reform comes on the third anniversary of the Parkland shooting.
This is Day 26 of the administration of President Joe Biden and Vice President Kamala Harris.
Biden and Treasury Secretary Janet Yellen will join the Democratic virtual caucus lunch Tuesday afternoon, according to Senate Majority Leader Chuck Schumer's office.
The meeting comes amid talks over next steps for COVID-19 relief and the question of whether Democrats will proceed with Biden's $1.9 trillion "American Rescue Plan" plan without bipartisan support.
-ABC News' Allison Pecorin
In floor remarks Tuesday, Senate Majority Leader Chuck Schumer said Democrats will press on with their budget resolution with a vote to proceed to consideration in the afternoon, setting up the first steps of passing COVID-19 relief through the reconciliation process.
"Time is a luxury our country does not have," Schumer said.
Schumer renewed calls for "big, bold relief" but told his Republican colleagues he welcomes their suggestions for the budget resolution.
"This process is open to bipartisanship," he continued.
Senate Minority Leader McConnell did not mention COVID-19 talks during his floor remarks but said he will vote against the confirmation of Alejandro Mayorkas to serve as Department of Homeland Security secretary, citing a 2015 inspector general report that raised questions about Mayorkas' actions in his former role at DHS.
"We are talking about shoving through green cards as political favors and intervening to overturn denials," McConnell said.
-ABC News' Allison Pecorin
House Democrats argue their case that former President Trump bears "unmistakable" responsibility for inciting the Jan. 6 riot on the Capitol, calling it a "betrayal of historic proportions" that demands judgment from the Senate in a pre-impeachment trial brief filed to the Senate Tuesday morning.
It's the first time Democrats have formally laid out their argument against Trump since transmitting the charge against him on Jan. 13 to kick off trial proceedings.
In their 80-page brief, the House impeachment managers depicted the riot as Trump's last-ditch effort to overturn the presidential election after dozens of failed lawsuits and pressure campaigns against state election officials.
"The only honorable path at that point was for President Trump to accept the results and concede his electoral defeat. Instead, he summoned a mob to Washington, exhorted them into a frenzy, and aimed them like a loaded cannon down Pennsylvania Avenue," the managers wrote in their brief submitted ahead of next week's trial of the former president.
Foreshadowing what the House managers will argue on the House floor, Democrats wrote that Trump was "reportedly 'delighted'" by the attack and "left his Vice President and Congress to fend for themselves while he lobbied allies to continue challenging election results."
The brief also argues that Trump's challenge to the results was a "direct assault on core First Amendment principles," and that holding him accountable would "vindicate First Amendment freedoms—which certainly offer no excuse or defense for President Trump's destructive conduct."
"For Congress to stand aside in the face of such conduct would be a grave abdication of its constitutional duty, and an invitation for future Presidents to act without fear of constraint during their final months in office," they wrote. "History, originalism, and textualism thus leave no doubt that the Senate has jurisdiction—and a constitutional duty—to decide this case on the merits."
-ABC News' Katherine Faulders and Benjamin Siegel
House Democrats on Tuesday are expected to make their case for convicting former President Donald Trump on a single article of "incitement of insurrection" in connection with the Jan. 6 Capitol riot in a pre-trial brief submitted to the Senate -- arguing that the chamber's action is needed to prevent him from holding elected office in the future.
Democrats will file their brief by 10 a.m. Tuesday, one week before Trump's second Senate impeachment trial begins in earnest on Feb. 9.
They plan to detail Trump's actions in the months leading up to the insurrection, attempting to paint a picture of a president who drew his supporters to Washington with the outright intention of them seeking to overturn the election by force if necessary, sources familiar with the brief said, and depicting the riot as the product of a months-long campaign to overturn the results.
To help argue their case, they are expected to cite videos and social media posts, along with law enforcement records and court documents stemming from the arrests of rioters from across the country who stormed the U.S. Capitol. Trump’s own words could also be invoked -- both from the rally outside the White House on Jan. 6 and on his recorded phone call with the Georgia Secretary of State, when he repeatedly pressured him to alter the results of the election in the state because he falsely claimed it was "not possible" for him to have lost.
Trump is expected to file his own formal response to Democrats' impeachment article on Tuesday by noon. His response comes after his entire legal team quit over the weekend, in part, because of disagreements over the legal strategy, according to sources. On Sunday, Trump announced he had hired two new lawyers to lead the team, Bruce Castor Jr. and David Schoen.
-ABC News' Katherine Faulders and Benjamin Siegel
