President Biden's use of notecards in closed-door fundraisers

President Biden has been using notecards in closed-door fundraisers to provide detailed answers to prescreened donors, raising concerns about his age among some donors. Biden advisers say the notecards are only used for detailed and technical questions, and Biden frequently engages in spontaneous Q&A sessions. Despite concerns, Biden's campaign dismisses worries about his reliance on notecards.