Don’t underestimate the power of the putdown in a presidential debate
Composite image of Donald Trump and Joe Biden (screengrabs)

Will either – or both – of these men use humor or insults in their first presidential debate?AP PhotoChris Lamb, IUPUIBefore the first presidential debate, President Donald Trump demanded that his Democratic challenger Joe Biden submit to a drug test.Trump was again suggesting – without evidence – that his opponent takes performance-enhancing drugs.If Trump brings this up during the debate, no one should be surprised if Biden has a comeback prepared. Biden’s campaign has already issued a statement on the president’s unusual challenge – “If the president thinks his best case is made in urine he...

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