Judge Juan Merchan plans to issue a ruling tomorrow about the bounds of Donald Trump's cross-examination if the former president decides to testify during the trial.

After hearing a brief oral argument this afternoon, Merchan told the parties he is reserving his decision, which he plans to issue sometime tomorrow.

Prosecutor Matthew Colangelo argued that Trump's alleged prior bad acts as demonstrated by a variety of civil and criminal determinations should be fair game during cross-examination.

The Sandoval hearing on Trump's potential testimony got underway with prosecutors pushing to cross-examine former president Donald Trump about his alleged violation of the limited gag order in his civil fraud trial.

Prosecutor Matthew Colangelo asked Judge Merchan to permit them to ask the former president about his testimony during his civil fraud trial when the former president claimed he was not referring to Judge Arthur Engoron's law clerk during remarks in the hallway of the courthouse last year.

Engoron determined that Trump's brief testimony rang "hollow and untrue."

Colangelo asked Merchan to allow cross-examination about Trump's testimony and the gag order violation last year in order to probe his credibility.

"He lied," Colangelo said of Trump. "It is very hard to think of something more probative of a testifying defendant's credibility."

Judge Juan Merchan began the court's afternoon session but did not mention the self-immolation incident this afternoon in the park across from the courthouse, and Trump did not respond to questions about the incident when asked by a reporter in the hallway outside the courtroom.

The judge plans to hold a Sandoval hearing this afternoon to determine the bounds of Trump's cross-examination if he decides to testify.

In a filing earlier this week, prosecutors said they planned to question the former president about his past civil cases, including $464 million business fraud judgment, the defamation and battery cases brought by E. Jean Carroll and a lawsuit Trump filed against Hillary Clinton claiming she conspired to rig the 2016 election.

Prosecutors also want to question Trump about the Trump Organization's 2022 criminal trial for tax evasion and the civil case against the Trump Foundation for misusing charitable donations to further Trump's political interests.

Trump is seated at counsel table between his lawyers Emil Bove and Todd Blanche. Manhattan District Attorney Alvin Bragg is not present in the courtroom.

Former President Trump has filed a new emergency appeal to change the venue of his criminal trial.

Oral arguments are scheduled for this afternoon to determine whether the trial should be temporarily paused.

The motion is expected to cite some of the responses prospective jurors gave during the jury selection process.

Trump's prior attempts to move the trial out of Manhattan have failed.

Several more prospective jurors have moved on to the next round of the screening process after some were excused after saying they could not serve impartially.

Among those who remain following the initial questionnaire are a senior living professional from the Upper West Side, a native Mexican who became a U.S. citizen in 2017, a corporate lawyer who lives in Chelsea, and a Disney employee.

A twice-married man who lives in Battery Park earned a tight smile from former President Trump when he said he had read some of his books, including "The Art of the Deal." He said he read that book, as well as "How to be Rich" and a third title that he couldn't quite remember, prompting a chuckle from Trump.

He said that relatives on his wife's side lobby and fundraise for the Republican Party, and that he followed Trump on Twitter during his presidency.

"I don't think there's anything that would prevent me from being a fair and impartial juror," the man said. "I feel that no one is above the law."

He said, however, that he "would be lying" if he said he would promise not to discuss the case "to some degree" with his wife. When the judge said he could say nothing of substance, the man replied, "That would be tough."

The man also said his daughter was the victim of a violent sexual assault that he described as "traumatic," but he said it left him with a "generally favorable view of the legal system."

Trump has largely remained engaged during the process, reviewing what appears to be a copy of the jury questionnaire and keeping watch over the prospective jurors as they tick through their answers.

But at times, like on Monday, he has been observed shutting his eyes, allowing his chin to slouch, then quickly jerking it back up.