It’s day one of opening arguments in the impeachment trial of President Trump. Over the course of many hours, House Managers argued their case for the removal of the President and the need for witnesses and documents. They are making these arguments to the American public, but also to the 100 Senators who are acting as jurors in this trial.

Steve Kornacki is joined by Frank Thorp, NBC News producer covering the Senate, to talk about the Republican Senators who may be persuaded to side with the Democrats when it comes to the question of witnesses.

Have a question about the Senate trial or something else impeachment-related? Email our host Steve Kornacki at [email protected].

For a transcript, please visit https://www.nbcnews.com/articletwo.

Further Reading

• Trump's Senate impeachment trial: What happened on Day 2
• Read the full text: McConnell's revised rules for Trump's Senate impeachment trial

On Tuesday, the Senate impeachment trial began in earnest, with hours of debate over how it should be run. Steve Kornacki explains the last-minute changes made by Senate Majority Leader Mitch McConnell, who amended his own set of rules in response to pressure from moderate Republican Senators.

Have a question about the Senate trial or something else impeachment-related? Email our host Steve Kornacki at [email protected].

For a transcript, please visit https://www.nbcnews.com/articletwo.

Further Reading

• McConnell makes last-minute, handwritten changes to Trump impeachment trial rules
• Trump's defense: Read the full text of the legal brief ahead of Senate impeachment trial

The Senate trial is officially underway, with the Chief Justice and members of the Senate sworn in this week.

But in a last-minute addition to the evidence, an associate of Rudy Giuliani gave the House of Representatives documents that shed new light on the Ukrainian pressure campaign. Parnas, who is out on bond on federal campaign finance charges, also spoke publicly this week for the first time about his involvement in the scheme.

Josh Lederman, national political reporter for NBC News, explains what we learned from Parnas, the credibility of his allegations, and how this new information could influence the Senate trial.

Have a question about the Senate trial or something else impeachment-related? Email our host Steve Kornacki at [email protected].

For a transcript, please visit https://www.nbcnews.com/articletwo.

Further Reading

• Key things we learned from Lev Parnas' revealing MSNBC interview
• Giuliani associate Parnas says Trump 'knew exactly what was going on
• Indicted Giuliani associate Parnas says Trump ordered Ukraine ambassador's firing several times before recall

It’s official. Today, House Speaker Nancy Pelosi named the seven house managers and transmitted two articles of impeachment, abuse of power and obstruction of justice, to the Senate. It is still unclear whether the trial, which is set to begin next week, will include witness testimony.

Steve Kornacki talks to Alex Moe, NBC News Capitol Hill Producer, about the historic week day in Washington and the Senate’s next move.

Have a question about this stage of impeachment? Ask our host Steve Kornacki: [email protected].

For a transcript, please visit https://www.nbcnews.com/articletwo.

Further Reading

• Who are the House's 7 impeachment managers?
• House votes to send impeachment articles to Senate, Pelosi names trial managers
• McConnell says he expects Trump impeachment trial to start next Tuesday

After a weeks-long standoff, the House of Representatives appears ready to move forward on impeachment. House Speaker Nancy Pelosi is reportedly preparing to appoint impeachment managers and send the articles to the Senate as early as this week.

MSNBC Washington Correspondent Garrett Haake lays out what to expect from a Senate trial and weighs whether the delay tactic used by House Democrats helped their case.

Have a question about this stage of impeachment? Ask our host Steve Kornacki: [email protected].

For a transcript, please visit https://www.nbcnews.com/articletwo.

Further Reading

• When will Trump's Senate trial start and how long will it last? The picture begins to take shape
• No impeachment witnesses against Trump? Some argue Democrats might be better off

After a weeks-long standoff with Republicans, House Speaker Nancy Pelosi told her Democratic colleagues she plans on holding a vote on the house managers next week before sending the articles of impeachment to the Senate. Chief Justice of the Supreme Court, John Roberts will govern the proceedings.

NBC Justice Correspondent Pete Williams joins Steve Kornacki to talk about the Chief Justice’s role and recalls his time covering former Chief Justice William Rehnquist during the Clinton Senate trial.

Have a question about this stage of impeachment? Ask our host Steve Kornacki: [email protected].

For a transcript, please visit https://www.nbcnews.com/articletwo.

Further Reading:

• Pomp, circumstance and silence: How a Senate presidential impeachment trial works

Senate Majority Leader Mitch McConnell says he has the votes to proceed with a Senate trial, but the House has yet to transmit the articles. So today, while our current impeachment process is on hold, we’re going back in time, to 1999.

Former Florida Congressman Bill McCollum served as one of 13 house managers during Senate impeachment trial of President Bill Clinton. McCollum talks about his role during the trial, the political fallout of being a house manager, and what he thinks about the impeachment proceedings today.

Have a question about this stage of impeachment? Ask our host Steve Kornacki: [email protected].

For a transcript, please visit https://www.nbcnews.com/articletwo.

For live coverage and latest news this week, visit the NBC News Impeachment Live Blog:

Further Reading:

• McConnell has the GOP votes for Trump’s trial now. That doesn’t mean he’ll have them later.
• Pelosi not ready to send articles of impeachment, but she could be ‘soon’

The House of Representatives still hasn’t sent the articles of impeachment to the Senate. Now, Congress faces another major decision. After President Trump authorized a strike to kill Iranian General Qassem Soleimani late last week, Democrats are presenting a new resolution to limit the president’s war powers.

Mark Murray, senior political editor, discusses how Congress is balancing impeachment and the threat of a war with Iran.

Have a question about this stage of impeachment? Ask our host Steve Kornacki: [email protected].

For a transcript, please visit https://www.nbcnews.com/articletwo.

Further Reading

• Trump's trial: Lawmakers return to D.C., and here's where things stand
• Pelosi announces war powers resolution as tensions with Iran escalate

Every President of the United States must swear to a 35-word oath, promising to preserve, protect and defend the Constitution. Special guest and MSNBC Contributor Chuck Rosenberg joins Steve Kornacki to discuss the founders’ intent behind that oath and what happens when it's put to the test.

Chuck Rosenberg served as a career federal prosecutor and later as United States Attorney for the Eastern District of Virginia. He has also served in senior positions at the Department of Justice for two Attorneys General, in the Federal Bureau of Investigation under two directors, and as the head of the Drug Enforcement Administration. Chuck is also the host of an MSNBC podcast, The Oath with Chuck Rosenberg.

For a transcript, please visit https://www.nbcnews.com/articletwo.

The impeachment process is in limbo as House Speaker Nancy Pelosi continues to delay sending the articles to the Senate. Demcratic leaders say they want to ensure a fair process in the Senate. So what will this trial look like?

Guest host Julia Ainsley, NBC News Correspondent covering the Departments of Justice and Homeland Security, talks to Frank Thorp, NBC News producer and reporter covering the Senate, about the rules governing a Senate trial and what to expect from this next phase in the impeachment process.

Want to ask a question about the impeachment? Email host Steve Kornacki at [email protected].

For a transcript, please visit https://www.nbcnews.com/articletwo.

Further Reading

• Democratic defector? Sen. Doug Jones could break with his party to back Trump at Senate trial