Hunter Biden's daughter testifies she saw her dad in rehab months before gun purchase

Naomi Biden, Hunter Biden's eldest daughter, testified that her father was in rehab and seemed to be doing better in the summer of 2018.

She testified as a defense witness that she visited him in Los Angeles and that he seemed the clearest "since my uncle (Beau Biden) died."

Naomi said she told Hunter that she was "proud of him."

Defense attorneys have argued that prosecutors have not sufficiently proven that Hunter Biden was actively using drugs around the time he purchased a gun in October 2018. Biden is charged with lying on a federal form to purchase the firearm that he was not an active drug user or addicted to narcotics.

Naomi Biden also testified that in mid-October 2018 -- after the gun purchase -- she drove Hunter's truck from D.C. to New York, and didn't find any drugs in the car.

She told the court at the start of her testimony that she was "nervous."

Naomi Biden is the third witness called by defense attorney Abbe Lowell. The prosecution rested it's case Friday morning.

One of the prosecution's star witnesses was Hallie Biden, Beau Biden's widow, who testified that she believed Hunter Biden was likely on drugs in mid-October 2018.