Prosecutors have rested their case against President Joe Biden's son Hunter Biden.

The defense is scheduled to present its case next.

Defense attorneys have said they could possibly wrap up their case by Monday, in which case jurors could begin deliberations as soon as Tuesday or Wednesday.

DEA special agent Joshua Romig took the stand to testify as an expert in the "coded language" used in drug trafficking.

He analyzed the language used in some of Hunter Biden's text messages, some of which appeared to be drug transactions.

First lady Jill Biden, back in the courtroom this morning, looked on as Romig testified.

Special counsel David Weiss, who brought the case against Hunter Biden, is also in court today.

Chemist Jason Brewer, testifying as an expert witness for the prosecution, told the jury that a brown leather pouch that contained Hunter Biden's gun at the time the weapon was retrieved by authorities tested positive for cocaine.

Brewer said there were "minimal amounts of white powder" on two locations on the pouch, which he combined and tested.

On cross-examination, Hunter Biden's attorney sought to raise doubts about how that white powder got there and who put it there -- emphasizing it could have been old, dating back to before Hunter Biden purchased the gun.

"You can't date when it got there?" defense attorney David Kolansky asked.

"I cannot," Brewer said.

Kolansky also emphasized that five years went by from the time the pouch was collected in October 2018 to when it was tested in October 2023 -- after the indictment in this case was already filed.

He emphasized the importance of the "chain of command," which Brewer conceded was "very important."

Earlier, Hunter Biden's former girlfriend Hallie Biden testified that she put the gun in the pouch, which she found in Hunter Biden's vehicle, after she discovered the weapon in the vehicle and before she disposed of it in a trash container.

Proceedings resumed this morning with the government calling FBI chemist Dr. Jason Brewer to the stand.

Brewer is testifying as an expert witness.

Prosecutors said they would then call a DEA officer as their final witness.

A jury of six men and six women is scheduled to hear opening statements Tuesday in Hunter Biden's federal gun trial.

An additional four women were chosen as the alternate jurors.

The jurors include a Secret Service retiree, a man whose father was killed by a gun, and a number of jurors whose family and friends have suffered from addiction -- a central theme in the case against Hunter Biden.

Juror No. 1 is a woman who recently heard about Hunter Biden's case on the evening news. Said said her sister is also an addict, but is "currently clean."

Juror No. 2 is a woman who worked for the Secret Service for nearly 25 years and is now retired. Her husband was a uniformed officer in Washington, D.C.

Juror No. 3 is woman who gets her news from YouTube. When asked what she has heard about the case, she said that it involves guns and drugs.

Juror No. 4 is a woman who said she feels people who smoke weed "should not be allowed" to own a gun, but said she could set that aside.

Juror No. 5 is a currently unemployed man who previously received a DUI for which he pleaded guilty.

Juror No. 6 is a man who said he previously knew about the case. He currently owns three pistols and said, "I believe the Second Amendment is very important."

Juror No. 7 is a man whose father owned a firearm. He said he knows "some" gun laws.

Juror No. 8 is a man whose father was killed by a gun in 2004. He has a brother who was arrested for drug possession and was sentenced to prison.

Juror No. 9 is a woman whose home was burglarized years ago. She purchased a gun and has had it for over 20 years.

Juror No. 10 is a man whose brother and brother-in-law both suffered from alcoholism and are now both deceased. His niece and nephew both own guns.

Juror No. 11 is a woman whose family hunts and has hunting rifles. She said her "childhood best friend" passed away from a drug overdose.

Juror No. 12 is a man whose older brother is an addict who has been to rehab multiple times for PCP and heroin. He said the brother had a gun but he was not sure when.