After attorneys for each side introduced themselves, Judge Juan Merchan said that before jury selection can begin "there are a couple of loose ends we need to go over before we start."

The first item, Merchan said, was a pair of motions filed by Trump's legal team seeking his recusal from the case, citing his past comments in interviews and his daughter's work with a Democrat-affiliated firm.

The motions, Merchan said, cite "pages and pages of screen grabs, articles, social media posts and the like" that amount only to "a series of inferences, innuendos, and unsupported speculation."

To call them "attenuated is an understatement," Merchan said.

Merchan denied the motion and said the court would not address the matter further.

"All rise," the bailiff announced at 9:59 a.m. ET. "This is the People of the State of New York v. Donald J. Trump."

And with that, proceedings are underway.

Members of the prosecution and the defense, including the former president, stood briefly as Judge Juan Merchan entered the courtroom and took his seat on the bench.

Manhattan District Attorney Alvin Bragg entered the courtroom shortly before court went into session.

Former President Trump arrived at the courtroom at 9:32 a.m. flanked by members of his legal team.

In brief remarks to reporters on the way in, he called his criminal trial an "assault on America."

"Nothing like this has ever happened before," Trump said, marking his first comments of the day as he becomes the first former American president to face criminal charges.

"There is no case," he said. "This is political persecution."

Trump also attacked President Joe Biden and said the case should not go forward.

Upon entering the courtroom, he sat at the defendant's table as his lawyers and court officers buzzed around him.

Several members of the Manhattan district attorney’s office have arrived in the courtroom.

Proceedings are scheduled to begin at 9:30 a.m. ET.

As jury selection resumed for the afternoon session, Judge Juan Merchan scolded former President Trump over his audible "muttering" while a prospective juror was speaking.

"Your client was audibly muttering something," the judge told Trump's attorneys. "He was speaking in the direction of the juror. I will not tolerate that. I will not have any jurors intimidated in this courtroom. I want to make that crystal clear. Take a minute and speak to your client."

The interaction occurred after Trump's defense attorney sought to immediately strike potential jurors for cause based on social media posts that he said contradicted their assertions of fairness.

"There's a number of the jurors that we have social media posts for very much contrary to the answers that they gave," defense attorney Todd Blanche said.

Blanche pointed to a woman who he said has a "series of extraordinarily hostile Facebook posts."

One of the posts read, "So I've been in the middle of the ocean for the last few weeks. What's going on?"

Another post included a video of people celebrating near Manhattan's 96th Street and the words, "Full-on dance party at 96 Street."

Judge Merchan seemed baffled. "Show me the bias," the judge said. "I'm trying to understand. How does this call into question what the juror said when that juror was answering questions?"

Blanche insisted the post, a day after the 2020 election, was a celebration of Trump's loss.

"This is ridiculous," prosecutor Josh Steinglass said.

The judge determined "there are enough questions here" to allow the defense to question the woman about her posts.

"I think I went to the car to alternate-side parking or something like that and there were people dancing in the street," the woman said, adding that it reminded her of the pandemic-era cheer for health workers.

"I understand that bias exists," the woman said. "The job of the juror is to understand the facts of the trial."

When the woman left the room, that's when the judge scolded Trump.