The upcoming U.S. presidential debate has become a battleground, with Donald Trump and Kamala Harris‘s teams at odds over the use of open microphones. Trump has threatened to withdraw from the event, accusing the ABC network of bias, according to a Reuters report. What Happened: Trump, in his third presidential run, hinted at his non-participation in the ABC network-hosted debate via a social media post on Sunday. He questioned the network’s impartiality, writing, “Why would I do the Debate against Kamala Harris on that network?” On Monday, Harris’ spokesperson, Brian Fallon, expressed the vic…