After filling out the jury questionnaire, the first panel of prospective jurors are being brought into the court room one-by-one to face individual questioning from the judge and both parties. As of about 9:45 a.m. ET, the court had made it through the questioning of just six jurors.

The prospective jurors so far have include a woman who worked with the Secret Service for over two decades and whose husband was a uniformed officer in Washington, D.C., at locations including the White House.

One prospective juror who volunteered for Hilary Clinton's 2008 campaign prompted the first mention of President Joe Biden -- though not by name.

Judge Norieka asked that prospective juror if her work volunteering and donating to Democratic campaigns would prevent her from being fair in a case that involved "the son of the Democratic president of the United States."

She said it would not.

The exchange occurred as first lady Jill Biden sat in the front row of the gallery, watching intently as each juror answered their questions. The first lady is sitting next to Hunter Biden's wife, Melissa.

Earlier, a prospective juror was struck for cause because of his firm views on guns, after he told the judge he thought gun ownership was a "God-given right." He said he would not be able to be impartial in a case where someone was prevented from buying a gun due to federal law.

Hunter Biden's arrival through the front entrance of the J. Caleb Boggs Federal Building this morning means he would have passed an enormous portrait of his father, which hangs in every federal courthouse in the country.

The first batch of 50 jurors were sworn in by Judge Noreika, who instructed them not to discuss the case with anyone, including family, or to conduct any research on the case or to read any news about it.

Reporters monitoring the proceedings from the overflow room could not hear most of Noreika's statement due to technical difficulties. As technicians tried to fix the issue, they turned on a TV that happened to be playing an attack ad against Joe Biden.

Hunter Biden has arrived at the courthouse for the start of his federal gun trial this morning.

His stepmother, first lady Jill Biden, is attending the proceedings.

Two hundred and fifty Delaware residents have been summoned to the courthouse in downtown Wilmington, where they will face typical questions about their fitness to serve as jurors.

But because this is the trial of the son of a sitting president, there will be some novel topics covered during the jury selection process known as "voir dire."

Among the questions jurors will be asked: "If you were eligible to vote in any election(s) in which Joseph R. Biden was a candidate, would that fact prevent you from maintaining an open, impartial mind until all of the evidence is presented, and the instructions of the Court are given?"

And "Do you believe Robert Hunter Biden is being prosecuted in this case because his father is the President of the United States and a candidate for President?"

Hunter Biden's attorney, Abbe Lowell, questioned FBI Special Agent Erika Jensen about Hunter Biden's infamous laptop, which prosecutors entered into evidence yesterday, asking her on cross-examination if she had done an "analysis" of whether "data" or "content" of the laptop was "tampered with, added to, or subtracted" during the months that passed between when Hunter Biden dropped off the device for service in April of 2019 and when the FBI obtained it in December 2019.

Jensen said she had not.

Lowell also took aim at the numerous text messages prosecutors have presented as evidence of Hunter Biden's drug addiction in 2018 and 2019.

Lowell showed that only two messages among the several alluding to drug use, drug paraphernalia, and drug purchases occurred during October of 2018 -- the period during which Hunter Bidden procured the firearm. The rest were either other months before the incident or months afterward, Lowell showed.

"You don't see any references … to baby powder?" Lowell asked Jensen, before ticking through other drug terms that appeared in the messages earlier in 2018 or later in 2019, including "chore boy" and "party favors."

Each time, Jensen replied "No."

Lowell also questioned Jensen about two messages Hunter Biden sent around the time of his gun purchase that did allude to drug use, one of them referring to an alleged drug dealer named "Mookie" and other referencing "smoking crack on a car" in Wilmington. Lowell sought to establish that Jensen had no firsthand knowledge about the contents of the messages.

"Do you know if there is a person named Mookie?" Lowell asked.

"No," Jensen replied.

"Do you know if he was on a car smoking crack?" Lowell asked later, referring to Hunter Biden.

"No," Jensen said.

Lowell subsequently ended his cross-examination of Jensen, and prosecutors undertook their redirect examination.