 Fox News. I'm Gianna Gelosi. President Joe Biden faced a test on Thursday that he had avoided so far this year, a solo news conference with questions from the White House press corps. But Fox's Brooke Singman reports it wasn't all smooth sailing. Biden began the press conference by calling Vice President Kamala Harris Vice President Trump. And during an event just before, he confused Ukrainian President Volodymyr Zelensky with Russian President Vladimir Putin, while Zelensky was right next to him.