The story of Biden’s cognitive decline and its cover-up is the subject of Original Sin, Tapper’s No. 1 best-selling book ...

In a surprising turn of events, Ron Klain, Joe Biden's former chief of staff, voluntarily faced congressional investigators, ...

Former Biden chief of staff Ronald Klain appears before House investigators probing whether White House aides concealed signs ...

Joe Biden's alleged Ambien use raises questions, as the medication is contraindicated for those requiring mental alertness, ...