Hunter Biden also says he failed to take into account potential implications on his father's political career.
In an ABC interview airing Tuesday, Hunter Biden concedes he may have made a mistake "in the grand scheme of things" for failing to see the political repercussions. But he adds: "Did I make a mistake based on some ethical lapse? Absolutely not."
Trump and Republicans have targeted Hunter Biden for his work in Ukraine and China, although there's no evidence of wrongdoing. In a July 25 phone call, Trump pressured Ukraine's leaders to investigate the Bidens.