 inadvertently posted online Wednesday, the High Court may take up the issue again in a future case. President Biden and former President Trump getting ready to face off in tonight's presidential debate. Biden-Trump will be on stage at the CNN studios for the first of two currently planned major debates ahead of November's election. The 90-minute event starts at 9 Eastern, 8 Central tonight. There'll be no interruptions with no live audience, as well as mics muted when the other is speaking.