Spoiler alert? Kamala Harris outed as Biden's VP pick -- maybe

Joe Biden's vice presidential pick has been one of Washington's best kept secrets but a supposedly accidental news publication and Biden's own teasingly displayed notes are raising expectations that the winner is Kamala Harris.Speculation over the choice of VP is a parlor game played every four years in Washington, but this time the stakes are unusually high.Biden would be 78 on taking office -- the oldest US president ever -- and he has hinted that he might not seek a second term, making his de