Hunter Biden has arrived at the courthouse for Day 2 of his federal gun trial.

He was accompanied by wife, Melissa Cohen Biden.

His stepmother, first lady Jill Biden, and his half-sister Ashley Biden are also in attendance for the second day in a row.

Hunter Biden returns to court this morning for the start of arguments in his federal gun trial.

Attorneys with special counsel David Weiss' office and lawyers for Hunter Biden are both scheduled to deliver opening statements in the case.

Judge Maryellen Noreika yesterday swore in a jury of six men and six women, completing the jury selection process in a single day to put the trial two days ahead of schedule.

Hunter Biden spent the first day of his gun trial taking notes, reading documents placed in front of him by his attorneys, and often turning to catch a glimpse of the friends and family who came to court to support him.

At one point, he nodded along as a prospective juror spoke about her friend's overdose after addiction.

Jill Biden was seated behind Hunter Biden all day, and she watched attentively as some jurors told the court that they had such a skewed view of her family that they could not be impartial. The first lady did not appear to react in those moments, but at times her daughter Ashley Biden placed her hand on the first lady's back in support.

Hunter Biden's family members also appeared to be actively involved with his defense strategy -- at one point standing up and huddling with Hunter Biden's attorneys Abbe Lowell and David Kolansky after a sidebar.

When court was dismissed, Jill Biden gave Hunter Biden a hug and a kiss before he walked out hand-in-hand with his wife.

Hunter Biden and his stepmother, first lady Jill Biden, departed court at the conclusion of the day's jury selection proceedings.

With opening statements set for Tuesday, prosecutors said their first witness would be FBI Special Agent Erika Jensen, who will introduce into evidence several of Hunter Biden's text messages, as well as excerpts from his 2021 memoir, "Beautiful Things," and other evidence.

The parties had carved out three days to select a jury, which means the proceedings are currently running ahead of schedule.

Judge Maryellen Noreika told jurors they would likely need to be available for the trial through June 14, with the possibility of deliberations stretching into the week of June 17.

Attorneys for Hunter Biden, in their cross-examination of FBI Special Agent Erika Jensen, attempted to push back on prosecutors' contention that Hunter Biden was abusing drugs at the time he said on a gun-purchase form that he was drug-free.

A key piece of evidence comes from Hunter Biden's 2021 memoir, in which he described his "relapse" just weeks after leaving rehab in August -- just six weeks before purchasing the firearm.

"I stayed clean for two weeks then relapsed," Hunter Biden wrote in his book.

Defense attorney Abbe Lowell, on cross-examination, questioned the assumption that Hunter Biden's relapse implied that he was referring to his drug use -- suggesting instead that he was referring to his alcohol addiction.

"When he was referring to that in his book, was he talking about relapsing to drugs and alcohol, or do you know what he meant?" Lowell asked.

"I can only state what was stated," Jensen said.

"Which is, 'Then I relapsed?'" Lowell asked.

"Just what it says, 'I relapsed,'" Jensen replied.

Jensen also acknowledged that she could not verify that Hunter Biden was continuously using drugs from 2015 to 2019, saying, "My recollection is that there are excerpts where he was principally occupied with smoking crack cocaine. I didn't get the sense that it was the entire history."

"Meaning that there were periods of time that he was not?" Lowell asked.

"I think there -- including the period in August where we have some invoices for rehab, that there were periods where there was not," Jensen said.

It was an important moment for the defense, as Lowell managed to establish that Hunter Biden's use of drugs was not consistent -- cuing up his argument that the president's son was not on drugs at the time of his firearm purchase.

Prosecutors also entered into evidence records related to enormous cash withdrawals Hunter Biden made -- more than $150,000 from September through November of 2018, including a $5,000 withdrawal on the day he purchased the gun. Prosecutors suggested this cash was used to procure drugs; Lowell, on cross-examination, established that Hunter Biden paid $900 in cash for the weapon and accessories.

Court was subsequently recessed for the day, with Lowell's cross-examination of Jensen scheduled to resume Wednesday morning.

Prosecutors suggested that Hallie Biden would be the next witness after Jensen, making it likely that the first Biden family member to testify will take the stand at some point tomorrow.