The prosecution is wrapping up in Hunter Biden's gun trial. There are 2 more witnesses expected

Federal prosecutors are wrapping up their gun case against Hunter Biden, with two more witnesses expected Friday in their effort to prove to jurors that the president's son lied on a mandatory gun purchase form when he said he wasn’t “an unlawful user of, or addicted to” drugs.

Prosecutors were still planning to call a drug expert and an FBI chemist, capping a week that has been largely dedicated to highlighting the seriousness of his drug problem through highly personal and sometimes salacious testimony.

Jurors heard from his ex-wife and a former girlfriend who testified about his habitual crack use and their failed efforts to help him get clean. They saw images of the president's son bare-chested and disheveled in a filthy room, and half-naked holding crack pipes, and they watched video of his crack cocaine weighed on a scale.

Prosecutor say the evidence is necessary to prove that Hunter, 54, was in the throes of addiction when he bought the gun and therefore lied when he checked “no” on the form. His attorney, Abbe Lowell, has argued Hunter did not think of himself as an “addict” when he bought the gun and did not intend to deceive anyone.

Meanwhile, President Joe Biden worked to walk the line between president and father, telling ABC in an interview that he would accept the jury’s verdict and ruling out a pardon for his son. Earlier this week he issued a statement saying: “I am the President, but I am also a Dad. Jill and I love our son, and we are so proud of the man he is today."

Biden is in France this week for D-Day anniversary events. First lady Jill Biden, who attended court most of the week, flew from France Thursday and was expected at the trial again Friday before returning to France for a state dinner.