 Energy-producing states had challenged the plan. The federal appeals court here in D.C. is going to consider their arguments. Election 2024 on WTOP, and we're counting down to tonight's opening debate of the campaign season between President Biden and former President Trump. They'll square off in the CNN-sponsored event at 9 o'clock. There are some different rules in tonight's contest, among them no studio audience. CBS News chief election and campaign correspondent Robert Costas in Atlanta.