Should Biden address the specifics of Bobulinski's claims against him?

Tony Bobulinski has alleged that Joe Biden lied when he stated that he has never discussed Hunter’s businesses with him. This is in spite of the facts that Joe loves Hunter, and the two traveled together for hours on Air Force 2.

Bobulinski also alleges that Joe Biden was given 10% of SinoHawk as “the big guy”. This was after Joe finished his stint as VP, but Joe is on record as saying that he has never received a penny from any foreign source.

Therefore, should he at least be confronted with each allegation and be forced to deny them, one by one? He is, after all, very likely to become our next President at a time when his stance towards China may be crucial.