Rep. Jerry Nadler, D-N.Y., arguing in support of an amendment that would have the Senate subpoena former national security adviser John Bolton, blasted a defense cited by Trump's legal team as well as Trump's attorneys in courtrooms across the country: absolute immunity. 

"Obviously, this is ridiculous. It's been flatly rejected by every federal court to consider the idea. It's embarrassing the president's counsel would talk about this today," Nadler said of the strategy before turning a critical eye to the senators before him.

"The president is on trial in the Senate, but the Senate is on trial in the eyes of the American people. Will you vote to allow all the relevant evidence to be presented here? Or will you betray you pledge to be an impartial juror?" Nadler said.

"Will you bring Ambassador Bolton here? Will you permit us to present you with the entire record of the president's misconduct? Or will you instead choose to be complicit in the president's cover-up? So far, I'm sad to say I see a lot of senators voting for a cover-up, voting to deny witnesses, an absolutely indefensible vote, obviously a treacherous vote." 

Trump attorney Pat Cipollone said it was Nadler who should be embarrassed. 

"The only one who should be embarrassed, Mr. Nadler, is you for the way you've addressed this body. This is the United States Senate. You're not in charge here," Cipollone shot back.

Trump's legal team has argued that White House aides have "absolute immunity" to ignore congressional subpoenas, and many did so during the House's impeachment inquiry. But the argument has been rebuffed in court.

A federal judge ruled in November that former White House counsel Don McGahn must obey a subpoena for testimony issued by the House Judiciary Committee, writing in her ruling: "With respect to senior-level presidential aides, absolute immunity from compelled congressional process simply does not exist." 

Purpura presented a key part of Trump's defense early on Saturday, saying Zelenskiy and his top aides said publicly that the Ukrainian president felt no pressure in his July 25 phone call with the president.

Purpura said such an assertion from Ukraine amounts to case closed, saying a judge would "toss" such a case based on that evidence. He added that the Democrats are essentially calling these Ukrainian officials untruthful.

Of course, Democrats have argued that Ukrainian officials had to say such publicly, because if they said Trump pressured them, it would almost certainly result in Ukraine facing negative consequences.

"They will also make the argument Ukraine thinks the call was perfect and they said there was no pressure," Schiff said in his closing argument. "That really means Ukraine knows it's beholden to us for aid. Ukraine still hasn't gotten into the door of the White House."

"Ukraine knows if they acknowledge they were shaken down by the president of the United States, the president of the United States will make them pay," he continued. "So when you hear them say Ukraine felt no pressure that's because [Zelenskiy] doesn't want to call him a bad name. You well know why because they need America. The framers did not expect you to leave your common sense at the door."

Lev Parnas's attorney Joseph Bondy told MSNBC's Rachel Maddow that he has turned over a 2018 recording of President Donald Trump appearing to order the firing of former Ukraine Amb. Marie Yovanovitch to the House Intelligence Committee as of Friday evening. 

Bondy said that he turned over the tape to the panel, which took the lead on the impeachment inquiry, and wants them to make it public because it could help his client's case. 

"I hope they'll make it public," he said. "I think it's of critical importance that we hear the evidence. I think that's the best was we have to ensure our chances of having a fair trial, real trial if you will." 

MSNBC has heard portions of the recording, which was first reported by ABC News. 

Bondy said that he and his client are not the source of ABC's story.

During Schiff's closing remarks the chamber was almost entirely full expect for three empty seats on the Republican side. The room was very engaged with Schiff's remarks— many never breaking their gaze. 

When Schiff mentioned the CBS report that said Republican senators were told their heads "will be on a pike" if they vote against Trump, Collins said "that’s not true" fairly loudly multiple times and shook her head vigorously. 

The floor was almost completely captivated by Schiff, especially during the emotional family stories, with no one taking notes or reading.

Later, Sen. Joni Ernst, R-Iowa, called the story "baloney."

"It's hard to keep an open mind when there's so much baloney being thrown at you," she said.

Schiff concluded Democrats' opening arguments on Friday night, appealing to the senators' faith in American ideals and urging them to consider this trial's place in history and the world.

Schiff said he believed this trial was "a moment when our democracy was gravely threatened and not from without from within. Russia too has a constitution. It’s not a bad constitution, it’s just a meaningless one."

He argued that America is a beacon of democracy and fairness around the world while suggesting the outcome of this trial could threaten it.

"From all over the world, they look to us — and increasingly, they don't recognize what they see," Schiff said. "Americans get a fair trial — and so I ask you, I implore you. Give America a fair trial. Give America a fair trial. She’s worth it."

A number of senators spoke to reporters during the dinner break about what they’ve witnessed so far today. Some Republican senators took aim at the House managers— in particular, Nadler's "dictator" comment seemed to strike a nerve.

"Nadler's disposition and tone throughout this entire process, I don't think, it doesn't reflect well on the House process," said John Thune, R-S.D. "I mean I think it's been very partisan and he's got a very partisan tone which is carried over into the, into the Senate, and so it's, you know, it probably doesn't matter to that many people in this room, because everybody kind of knows what they're dealing with there but I don't think it probably helps them with the American public."

"I feel like I'm, like, the prop in the longest political commercial that's ever been produced," said GOP Sen. Roy Blunt of Missouri. "Did y'all get that?”

Sen. Richard Blumenthal, D-Conn, said that his Republican colleagues will "be haunted" if they keep "refusing to see the facts."

He said they "have to understand the truth will come out sooner than they think, and they're gonna be haunted by it, because they'll have to justify refusing to see the facts that are fully available to them and witnesses and documents and that's going to be a pretty tough burden for them to carry into this election."

Schiff attempted to preview some of Trump’s potential defenses, seeking to debunk the various arguments as he went along. 

"I expect you’ll hear the argument Obama did it! Obama did it. Now that may take several different forms, but the form of Obama did it I’m referring to is Obama also held aid. I think that argument is an insult to our intelligence," Schiff said, pointing to how then-President Obama withheld aid during Egypt’s revolution.

"You will hear the call was perfect, you’ll hear the call was perfect. Now I suspect the reason they will make the argument the call was perfect is that because the president insists they do," he said. "I don’t think they really want to have to make that argument — you wouldn’t either. But they have a client to represent so they will make the argument the call was perfect."

He continued: "And they will also make the argument Ukraine thinks the call was perfect, Ukraine says there was no pressure. What that really means is Ukraine wants a future. Ukraine knows it’s still beholden to us for aid. Ukraine still hasn’t gotten through the door of the White House. Ukraine knows that if they acknowledge that they were shaken down by the President of the United States, the President of the United States will make them pay."

Schiff, as part of his closing remarks, said that Trump and his allies haven't seemed particularly invested in answering the gravity of the charges the House has laid out against the president — choosing instead to attack the process and the Democratic House managers, including himself. 

He then recalled a moment that Trump revisits often — when he parodied Trump's phone call with Ukraine's president while chairing a hearing of the House Intelligence Committee last September. 

"I discovered something very significant by mocking the president and that is for a man who loves to mock others, he does not like to be mocked. As it turns out, he's got a pretty thin skin. Who would have thought it?” Schiff said. “Never mind that I said I wasn't using his words before I said, and I wasn't using his words after I said it, and I said I was making a parody of his words — 'It's an outrage! He mocked the president, that Schiff! Terrible!'"

Trump has said Schiff should resign and be investigated for his mocking interpretation of that July phone call, in which Trump asked a foreign leader to look into the Bidens, as well as a conspiracy involving the 2016 election.

"He is a sick man!" Trump tweeted last September.  

Schiff read through the articles of impeachment on Friday night, arguing that the managers had proved each element with the refrain 'that has been proved.'

“President Trump solicited the interference of a foreign government in the 2020 election," he began. "That has been proved."

Looks like tonight could be an early night for impeachment watchers, as manager Schiff says he’ll be the last speaker tonight.

"I'm tired! I don't know about you but I'm exhausted,” he said.

Schiff joked that he was hoping to keep things short tonight, the conclusion of House Democrats' case against the president.

"To be immortal, you don’t need to be eternal."

A Democratic staffer working on the impeachment trial lays their case out as follows:

• Democrats made an overwhelming, compelling and airtight case — the evidence is absolutely incriminating, the facts are uncontested.

• It’s clear that the President is an ongoing threat to our national security and the upcoming elections. That’s why he must be removed.

• House Managers made a direct appeal to the Senators to consider the lasting impact of the President’s actions on our democracy, constitutional framework and Congress’ ability to exercise oversight of the executive branch. 

• Americans overwhelmingly want a fair trial. All trials include documents and witnesses – in this case, the hundreds and hundreds of pages of documents and dozen witnesses the President has blocked.