text:  I'm Monica Ricks. Supporters for President Biden and Donald Trump are gathering now in Atlanta, where the two will hit the debate stage in a few hours for a 2020 rematch. Our Skyler Henry has a preview. Biden aides say he plans to paint Trump as too dangerous for the White House. He'll also argue Trump would cut taxes for the rich and take away abortion rights. On the Republican side, Trump's aides are urging him to focus on crime, immigration, and the economy, issues where he leads in the polls.