evidence: Biden claims he was at Ground Zero day after 9/11 — but his own book puts him in DC WASHINGTON — President Biden said Monday that he was at the World Trade Center site in New York City one day after the 9/11 attacks — despite his own autobiography placing him in DC. [...] "Ground Zero in New York — I remember standing there the next day and looking at the building. And I felt like I was looking through the gates of hell," Biden told US troops in Anchorage, Alaska, on the 22nd anniversary of the terrorist attacks.