 While he is regularly at the White House residence and events, it is unusual for Hunter Biden to be in and around meetings that his father is having with his team. They said the president's aides were struck by his presence during their discussions. One of the people familiar with the matter said Hunter Biden has been closely advising his father since the family gathered this past weekend at Camp David after Thursday's debate. The person said Hunter Biden has popped into a couple of meetings and phone calls the president's had with some advisors. Another person familiar with the matter said the reaction from some senior White House staff has been, what the hell is happening?