Trump lawyer David Schoen, expanding on Bruce Castor's argument that the U.S. wasn't meant to follow the "British model," argued House Democrats held the impeachment article against Trump and forced an "intentional delay."

However, Senate Minority Leader Mitch McConnell told soon-to-be Majority Leader Chuck Schumer he wouldn't bring the Senate back from recess early, in part, so that Trump's defense team could have time to prepare.

Schoen argued in his opening remarks that the nation cannot heal from the attack and unify so long as the trial moves forward, calling on senators to vote that the trial is unconstitutional in a vote later Tuesday because, he said, the trial lacks due process.

"They say you need this trial before the nation can heal, that the nation cannot heal without it. I say our nation cannot possibly heal with it," he said.

Schoen also stated as fact that "the trial in the Senate of a private citizen is not permitted" and said that only a "sitting president can be convicted and impeached," pointing to how Supreme Court Chief Justice John Roberts isn't presiding over the trial. However, Democrats cited legal scholars in their opening arguments debating the opposite.

"Trial by the Senate sitting at the court of impeachment is reserved for the president of the United States, not a private citizen who used to be president of the United States," he said. "This is the first time that the United States Senate has ever been asked to apply the constitution's textual identification of 'the president' and impeachment provisions to anyone other than the sitting president of the United States."

At one point, Schoen criticized House managers for, he said, using "a movie company and a large law firm" to package a video of the Jan. 6 Capitol attack to "chill and horrify you."

He went on to play a video accompanied with ominous music of Democrats calling for Trump's impeachment.

-ABC News' Benjamin Siegel

David Schoen, a member of Trump's legal team, rebutted the arguments by Democratic House managers. He insisted that the trial proceedings lacked due process from the beginning and said that the trial was rushed by the House for partisan reasons.

Schoen also attacked a claim by House managers that the impeachment would unite the nation.

"They say you need this trial before the nation can heal, that the nation cannot heal without it. I say, our nation cannot possibly heal with it," Schoen said. "With this trial, you will open up new and bigger wounds across the nation, for a great many Americans see this process for exactly what it is, a chance by a group of partisan politicians, seeking to eliminate Donald Trump from the American political scene and seeking to disenfranchise 74 million plus American voters, and those who dare to share their political beliefs and vision of America."

Schoen also argued that the proceedings are partisan and showed a video featuring Democratic lawmakers calling for the impeachment of Trump over the past four years.

"They've called their fellow Americans who believe in their country and their constitution 'deplorables'. And the latest talk is that they need to deprogram those who supported Donald Trump and the Grand Old Party," Schoen said. "But at the end of the day, this is not just about Donald Trump or any individual, this is about our constitution and abusing the impeachment power for political gain."

A Trump adviser told ABC News' Chief Washington Correspondent Jonathan Karl there was "very clear, deliberative strategy" behind Castor's speech and that the intention was to lower the temperature from Democrats' emotional opening.

Wrapping up his 45 minutes of speaking time, Castor said the defense "changed" their presentation because the House case was so "well done" and vowed to answer the House arguments later.

"I'll be quite frank with you, we changed what we were going to do on a count that we thought that the House managers' presentation was well done, and I wanted you to know that we have responses to those things," he said. "We have counter arguments to everything that they raised and you will hear them later on in the case."

Bruce Castor opened arguments for the defense team in a wide-ranging speech in which he first praised the arguments of the House impeachment managers and then took issue with -- arguing the nation's Founders didn't intend for former officials to face trial and, citing the First Amendment, that Trump should not be held accountable for his political speech.

"That's what we broke away from Great Britain in order to do," Castor said. "To be able to say what we thought."

"This trial is about trading liberty for security from the mob? Honestly, no. It can't be. We can't be thinking about that," he continued. "We can't possibly be suggesting that we punish people for political speech in this country. And if people go and commit lawless acts as a result of their beliefs and they cross the line, they should be locked up."

Castor said that none of the rioters have been charged for conspiring with Trump and called Democrats' argument that Trump violated the 14th Amendment "absolutely ridiculous."

One overarching point of Castor's was an argument heard in Trump's first impeachment trial -- that the Senate must reject this impeachment to prevent future trials or else, "The pressure will be enormous to respond in kind."

"The political pendulum will shift one day," Castor continued. "And partisan impeachments will become commonplace."

He also took issue with the House passing a single article of impeachment, which he deemed casting too wide of a net, rather than breaking it into parts.

"The article of impeachment is indivisible and the reason why that's significant is you have to agree that every single aspect of the entire document warrants impeachment because it's an all-or-nothing document. You can't cut out parts that you agree with," Castor said.

"We are really here because the majority of the House of Representatives does not want to face Donald Trump as a political rival in the future," he added. "Nobody says it that plainly, but unfortunately I have a way of speaking that way."