President Joe Biden is beginning an intense period of private debate preparations at Camp David [Video]

President Joe Biden begins an intense period of private preparations Friday at Camp David for what may be the most consequential presidential debate in decades. Video above: What’s different about Biden and Trump’s first 2024 presidential debate?The 81-year-old Democrat’s team is aware that he cannot afford an underwhelming performance when he faces Republican rival Donald Trump for 90 minutes on live television Thursday night. Biden’s team is expecting aggressive attacks on his physical and mental strength, his record on the economy and immigration and even his family.Trump, 78 and ever confident, will stay on the campaign trail before going to his Florida estate next week for two days of private meetings as part of an informal prep process. The former president’s allies are pushing him to stay focused on his governing plans, but they’re expecting him to be tested by pointed questions about his unrelenting focus on election fraud, his …