The House Rules Committee began meeting at 11 a.m. Tuesday to take up the rules governing floor debate for a resolution pressing Vice President Mike Pence to use the 25th Amendment and force Trump out of office.

"It is absolutely critical for us to make clear that this was a dereliction of presidential duties," said Rep. Jamie Raskin, D-Md., one of the resolution's co-sponsors. "The president is not even minimally discharging the basic duties of his office."

A vote on the resolution is expected around 7:30 p.m., according to House Majority Leader Steny Hoyer’s office.

Democrats will give Pence "24 hours after passage" to respond and mobilize the Cabinet to remove Trump, said House Speaker Nancy Pelosi in a statement Monday, otherwise the House will move forward with an impeachment vote as early as Wednesday, setting up Trump to be the first president in U.S. history impeached twice.

The House Rules Committee is expected to take up rules governing floor debate for the impeachment resolution -- which charges Trump with inciting an insurrection -- later in the day.

The president appeared before the press for the first time since last Wednesday -- the day his supporters stormed the Capitol following his remarks at a rally calling on them to march to the building -- when he departed the White House for Alamo, Texas, on Tuesday morning. He took the opportunity to criticize efforts to remove him from office.

"As far as this is concerned, we want no violence -- never violence," Trump said outside the White House. "On the impeachment, it's really a continuation of the greatest witch hunt in the history of politics. It's ridiculous. It's absolutely ridiculous. This impeachment is causing tremendous anger, and you're doing it, and it's really a terrible thing that they're doing."

"For Nancy Pelosi and Chuck Schumer to continue on this path, I think it's causing tremendous danger to our country, and it's causing tremendous anger," Trump added. "I want no violence."

Trump is expected to hold an event related to the souther border later this afternoon. Before addressing impeachment, he said the wall has made a "tremendous difference" in stopping illegal immigration.

-ABC News' Ben Gittleson

When he leaves for Alamo, Texas, Tuesday morning, it will be President Trump's first time in public since last Wednesday -- the day his supporters stormed the U.S. Capitol after he encouraged a crowd of thousands, at a rally beforehand, to put pressure on lawmakers affirming Biden's victory in Congress.

Apart from posting video on Twitter last Thursday, before the platform permanently suspended his account, the president has remained behind closed doors at the White House -- spending his final days in office out of the public eye -- but is expected to break his silence with afternoon remarks.

"President Trump is expected to travel to Alamo, Texas, on Tuesday to mark the completion of more than 400 miles of border wall -- a promise made, promise kept -- and his administration's efforts to reform our broken immigration system," White House deputy press secretary Judd Deere told reporters ahead of the visit.

The president is facing renewed calls from congressional Democrats to be removed from office in the wake of last week's riot, with the House poised to pass an impeachment resolution as early as Wednesday charging the president with incitement of insurrection -- and setting Trump up to be the first president in history to be impeached twice.

Trump, for the first time since the assault, spoke with Vice President Mike Pence at the urging of his advisers and allies in an Oval Office meeting Monday that lasted 90 minutes and was friendly in nature, according to White House officials briefed on the meeting. Pence is not expected to invoke the 25th Amendment as House Speaker Nancy Pelosi has called on him to do.

Biden, on Tuesday, will receive the President’s Daily Brief and meet with advisers, while his transition team and allies in Congress begin a push to confirm his national security nominees so they're in place next week, with priority on the confirmation of Department of Homeland Security Secretary-designate Alejandro Mayorkas.

Defense Secretary-designate Gen. Lloyd Austin, nominee for Director of National Intelligence Avril Haines and Secretary of State-designate Tony Blinken will also be part of the push ahead of their hearings on Capitol Hill.

Biden’s nominees may also need now to contend with an impeachment trial in the Senate. Biden suggested in remarks Monday the Senate look into splitting the its time in order to confirm his nominees, pass COVID-19 relief and deal with a presidential impeachment.

-ABC News' John Parkinson, Ben Gittleson and Molly Nagle

Rep. Tim Ryan, D-Ohio, a House Appropriations subcommittee chairman who presides over Capitol Police funding, told reporters Monday afternoon that two Capitol Police officers have been suspended after the storming of the Capitol last week.

"One was the selfie officer, and another was an officer who had put on a MAGA hat and started directing some people around," he said.

Ryan said he was informed of both by the interim Capitol Police chief.

The congressman also said he has heard of 10 to 15 ongoing investigations of officers' actions and that the interim chief is taking "aggressive action" in the department to determine "if there was any facilitation or help" from inside the department.

Late Monday, the acting Capitol police chief released a statement that said the department has been actively reviewing video and other open source materials looking for officers and officials who appear to be in violation of department regulations and policies.

"Our Office of Professional Responsibility will investigate these behaviors for disciplinary action, up to, and including, termination. Several USCP officers have already been suspended pending the outcome of their investigations," the statement said.

Acting Chief Yoganada Pittman also said that law enforcement agencies throughout the capital region have comprehensive, coordinated plans in place to ensure the safety and security of the congressional community and for the upcoming presidential inauguration. There will be no public access to the Capitol grounds during the inauguration and but the event will go on as scheduled.

-ABC News' Benjamin Siegel and Jack Date

Addressing the coronavirus pandemic, confronting the climate crisis and building public trust in science and technology will be among the Biden administration's key areas of focus, the president-elect said during a press briefing introducing four key members of his science team.

Building back the economy "to ensure prosperity is fully shared all across America" and ensuring the U.S. "leads the world in technologies and industries that the future" will also be a focus, Biden said Saturday during an address in Wilmington, Delaware.

Helping lead those initiatives will be Eric Lander, the presidential science advisor-designate, a position that for the first time will be a cabinet rank, Biden noted.

"I've always said that the Biden-Harris administration will lead with science and truth," Biden said. "We believe in both. This is how we're going to, God willing, overcome the pandemic and build our country back better than it was before. That's why for the first time in history, I'm going to be elevating the presidential science advisor to a Cabinet rank, because we think it's that important."

Frances Arnold and Maria Zuber will be at the helm of the first all-women team to lead the President’s Council of Advisors on Science and Technology.

Alondra Nelson will also be deputy director for science and society for the Office of Science and Technology Policy.

Dr. Francis Collins, who was not present at the event, will also continue in his role as director of the National Institutes of Health.Biden thanked him for "being willing to stay on," saying that it wasn't his original plan.

"I've known Dr. Collins for many years. I worked with him closely," Biden said, accling him "brilliant, a pioneer, a true leader."

"This is the most exciting announcement that I have gotten to make in the entire Cabinet," Biden said of his picks. "These are among the brightest, most dedicated people, not only in the country but the world."