"Never," he replied. "Never. Not once."
Hunter Biden is the second son of the president, a lawyer trained by Yale and a tourist activist, his notorious drug problems, human scandals and business dealings seem to have kept him in the news for all the wrong reasons.
"There is a current investigation in the Department of Justice on your finances," Smith said. "What is it about? Is there anything you can say?"
"I do not know. But all I can say is that I am fully cooperative. And I am 100% sure that by the end of the investigation, I will be removed from any wrongdoing."
"Are you 100% sure you will be deleted?"
"I'm 100% sure of it. And all I can do is cooperate, and trust the process."
Hunter Biden. CBS NEWS
From an early age, Hunter Biden and his older brother, Beau, were part of Joe Biden's public life, and when they were both injured in a 1972 car crash that killed their mother and sister, their father - a newly elected US Senator - took the oath of office.
But as the sons of Biden grew up, their ways changed.
Beau was a veteran of the war and a Delaware Attorney General in charge of affairs at the high office.
But Hunter, who was expelled from the Navy Reserve after failing a drug test, suffered from drug abuse for years - and after Beau died of brain cancer in 2015, Hunter said he began drinking so much vodka that his father intervened.
"He came to my house once," recalls Hunter. "And this happened while he was in office as vice president, so he set up his Secret Service, and tried a way to get through the house. I said, 'What are you doing here?' She said, 'Honey, what are you doing?' I said, 'Dad, I'm fine.' He said, 'You are not well.' "
He sought, and found, help in the restoration, but in time fell out of the chariot and into the abyss.
Smith asked, "Can you get up in the morning - I shouldn't even say anything in the morning, because you sleep, like 15 minutes at a time - and look at the crack, and just smoke whatever was there?"
"Yes," Hunter said. "I spent a lot of time on my hands and knees reading mats, smoking anything like crack cocaine from a distance. I smoked Parmesan cheese more than anyone knows, I'm sure, Tracy! only then. "
The struggle of Hunter Biden and his own demons is a major part of his new book, from the writings of Simon & Schuster (ViacomCBS company). The theme, "Good Things," is a phrase she and her brother share to remind each other of the good in life.
Also, Hunter added, "It was the last thing he said to me: 'Good things.'"
Hear an excerpt from Hunter Biden's audio book "Good Things" about his relationship with his brother Beau during his recovery:
Beau's death shocked the entire Biden family, but Hunter's way of dealing with his grief made headlines when he began dating his brother's widow.
Smith asked, "After Beau's death, he fell in love with Hallie, his widow. When the news broke, how did people react?"
"I think people are confused by it," he said. "And I understand that. I mean, I really do. For me, it's not a difficult thing to explain. Because it came out of the great tribulation we shared. And we were together, and we tried to do what was right. it worked. It didn't work. "