 President Biden is in Atlanta for the presidential debate. Biden departed Joint Base Andrews after spending a week at Camp David prepping for the event. Meanwhile, former President Trump is departing Palm Beach, Florida for the big event. The 90-minute debate will begin at 9 Eastern tonight on CNN. The network is revealing how microphones will be muted automatically during this evening's debate. When Biden and Trump face off, the candidates' mics will be muted when their opponent is speaking. A guest tried to speak as his mic was off and it was very difficult to hear over the air.