During Tuesday's Democratic primary debate, Biden said that his son "did nothing wrong" and that he is "proud of the judgment" he made.
Former Vice President Joe Biden, one of the Democratic presidential hopefuls, speaks during the fourth Democratic presidential debate, which was co-hosted by The New York Times and CNN. "That's what we should be focusing on".
During the crowded debate last night, which brought together a dozen candidates, Biden was asked why it was not okay for a president's family to be working with foreign businesses, if it was okay for a vice president's family to do business with Ukraine.
Trump has tried to draw a line between Joe Biden's push as vice president to remove Ukraine's top prosecutor, Viktor Shokin, and Burisma, which had previously been under investigation by Shokin, saying that the decision was made to protect Burisma. He also said that he never discussed Ukraine matter with his son, but was contradicted by his son when he admitted he had discussed Ukraine with his father once.
Yet Trump got the worse end of the bargain, because the Democrats have used it to launch an impeachment inquiry.
"In retrospect, look, I think that it was poor judgment on my part..." he said.
'This president on three occasions - three occasions - has invited foreign governments and heads of government to get engaged in trying to alter our elections.
Biden's son resigns from Chinese firm amid Trump furore
"To date, Hunter has not received any compensation for being on BHR's board of directors", Mr Mesires said . Hunter also said he will not do any work for foreign-owned companies if his father becomes president.
"My son made a judgment", Biden added. "But did I make a mistake based upon some ethical lapse?"
Begala remarked, "God bless Donald Trump Jr".
Hunter has vowed not to serve on the boards of foreign-owned companies if his father is elected president. "And let's focus on this".
"Did I make a mistake?" But I think what would be a disaster, if the American people believe that all we were doing is taking on Trump and we're forgetting that 87 million Americans are uninsured or underinsured, ' said Sanders.
His comments came after Biden adviser Anita Dunn indicated to DailyMail.com that the campaign considered the subject of Hunter Biden to be closed.
Trump has insisted he did nothing wrong and, earlier this month, contended to reporters that he had a "duty" to investigate "corruption".
Later on, before answering another unrelated question, Booker returned to the Ukraine question.