text:  And with hours to go until the first presidential debate of the 2024 election campaign, President Biden and former President Trump are in the final preparations. Mr. Trump has been campaigning as a way to prepare, including a call-in at an Atlanta-based barbershop. ABC's Perry Rusum has the story. All right, everybody, you're on with the president. Hello, Mr. President. Hey, Mr. President. The Trump campaign holding a roundtable at a barbershop in Atlanta, discussing issues facing the black community. Trump calling into the event...