"It's when, not if," CNN's Michael Smerconish weighs in on President Joe Biden's high-stakes interview on ABC. Want to stay up to date on the day’s top stories? Sign up for CNN’s 5 Things newsletter, and we’ll give you the 5 biggest stories you need to know, videos people are watching, and more! Sign up here: cnn.com/newsletters/5-things?source=nl-acq_social_youtubedesc&utm_source=nl-acq_social_youtubedesc #cnnpresidentialdebate #News