Watch Live: Biden and Trump face off in first 2024 presidential debate, hosted by CNN CBS News President Biden and former President Donald Trump are facing off in the first presidential debate of the 2024 race. The debate, hosted by CNN, will take place without an audience and the presumptive party nominees' microphones will be muted except when it's their turn to speak. CBS News will simulcast the debate starting at 9 p.m. ET. https://youtube.com/watch?v=XxAU0K94fpw