U.S. President Joe Biden began a new push in Philadelphia on Wednesday to court Black voters, a critical voting bloc that is showing signs of weakness for Democrats ahead of the November election, as he attacked his Republican opponent. "With your vote in 2024, we're gonna make Donald Trump a loser again," Biden, accompanied by Vice President Kamala Harris, told a cheering crowd at Girard College, a historic boarding school founded to serve poor, white orphan boys that desegregated in 1968...