After several hours of arguments over various evidentiary and procedural matters, jury selection is nearly ready to get underway.

"This is what we're going to do -- sit down and relax," Judge Merchan told attorneys for both sides. "We have 500 jurors waiting for us. And to be honest with you, I'm not interested in getting into this minutiae with you."

"There's more important work to be done," he said.

Before moving on, Merchan assured attorneys for both parties that his pretrial rulings are subject to change over the course of the trial.

"This is a roadmap," Merchan said, referring to his rulings. "I can reverse myself, I can change my mind."

Merchan then began reading instructions to the attorneys about how to conduct themselves before prospective jurors.

After a break, Judge Merchan ruled that prosecutors can submit evidence related to Trump's attacks on his former attorney Michael Cohen if the defense first chooses to question Cohen's credibility as a witness.

Merchan said, "I imagine" the defense will seek "to discredit" Cohen -- and when they do, he said, "the door is open" for prosecutors to introduce those tweets of Trump's.

Trump has been leaning forward with his hands clasped beneath his chin as his attorney, Todd Blanche, argues about what other evidentiary guardrails should be in place.

Following the arguments over alleged witness intimidation, prosecutors signaled they may seek to have Trump held in contempt.

A limited gag order Judge Merchan imposed in recent weeks prohibits Trump from attacking witnesses and others associated with the case.

"Shortly, we will be seeking order to show cause as to why defendant should not be held in contempt," prosecutor Josh Steinglass said, suggesting Trump violated Merchan's order.

Prosecutor Joshua Steinglass argued that several pieces of evidence related to Trump's alleged "pressure campaign" meant to "keep witnesses off this stand, at this trial" should be introduced at trial.

Steinglass said Trump's public commentary amounted to a "thinly veiled effort to intimidate" two of the government's star witnesses, Michael Cohen and Stormy Daniels.

"The defendant himself has publicly embraced the public strategy of going after his perceived enemies," Steinglass said.

"These tweets, phone calls and emails" should be permitted, Steinglass said. "It's a clear effort to raise the cost of cooperation."

Trump's public postings, Steinglass argued, demonstrate Trump's attempts to silence potential fact witnesses and "relate to his consciousness of guilt."

Trump attorney Todd Blanche pushed back, saying that Trump has been "facing criticism from all sides … the media and others ... and he's defending himself" to his "millions and millions of followers."

Former National Enquirer publisher David Pecker testified that he was twice summoned to Trump Tower in the period following the 2016 election: the first time for a meeting with Michael Cohen, and the second with Donald Trump.

The first meeting began in Cohen's office, where Cohen divulged for the first time to Pecker that he personally covered the $130,000 payment to Stormy Daniels, and that he was concerned that he would not receive a bonus from the Trump Organization, Pecker testified.

"He (Cohen) asked me to talk to the boss on his behalf to try to help him get his bonus," Pecker said, referring to Trump.

When Trump himself came into the room, Pecker asked to walk him back to his office -- and at that time, Pecker told Trump that "Michael Cohen is very concerned about his bonus for this year, and I want you to know that he's very loyal."

Trump replied that Cohen had several apartments and taxi medallions, and added, "Don't worry about it, I'll take care of it," Pecker said.

On Jan. 6, 2017, Pecker arrived at Trump Tower for a meeting with Trump and was escorted to his residence by Jared Kushner, he testified.

Pecker said he was ushered into the room, where Trump was surrounded by administration officials James Comey, Sean Spicer, Reince Priebus, and Mike Pompeo -- they were "updating Mr. Trump on the Ft. Lauderdale shooting" that had occurred at the airport there.

Pecker testified that when Trump introduced him to Trump's inner circle of advisers, Trump said of the National Enquirer publisher, "He knows more than anyone else in this room."

"It was a joke. Unfortunately, they didn't laugh," Pecker testified, which brought some laughs from reporters in the gallery. A few jurors smiled at the moment.

Pecker testified that after Trump's advisers left the room, Trump turned to him.

"He (Trump) asked me how Karen [McDougal] was doing -- how's 'our girl' doing. I said, she's writing her articles, she's quiet, things are going fine."

Trump then said, "I want to thank you for handling the McDougal situation." And then he said, "I want to thank you for the doorman situation," Pecker testified.

Pecker testified that he took this to mean that Trump was thanking him "for not publishing any of the stories and helping the way I did."