In a rare moment of unity, President Joe Biden, Vice President Kamala Harris, former President Donald Trump, and Sen. J.D. Vance put their political differences aside to commemorate the 23rd anniversary of the 9/11 attacks. What Happened: The political figures gathered at Ground Zero in Manhattan for a commemoration event. Trump and Harris, who had their first face-to-face encounter during the presidential debate the previous night, exchanged handshakes before the solemn ceremonies began, reported CNN. Post the event, Biden and Harris journeyed to Shanksville, Pennsylvania, to partake in a wre…