Getting ready for the next presidential debate – Donald Trump versus Kamala Harris – on September 10? Here's a type of question which, is history is any guide, probably won't be asked "How can you or any president, whoever is elected next time, keep that pledge without running this country deeper into debt and passing on more of the bills that we're running up to our children?" That was Bob Schieffer of CBS News… a question for Democrat John Kerry when he debated Republican President George W. Bush 20 years ago. How frequently – or, actually, infrequently -- have debate moderators asked presidential candidates about the national debt? What have the candidates themselves said about the debt? And how much was the national debt when it was first mentioned in a debate – and how much is it today? Learn more about your ad choices. Visit megaphone.fm/adchoices