Michigan voters could play critical role in 2020 election

"CBS This Morning" co-host Tony Dokoupil hits the streets in suburban Detroit with Michigan Governor Gretchen Whitmer ahead of the 2020 presidential election. The state is critical to both Republican and Democratic bids for the White House. Dokoupil examines the importance of voter mobilization ahead of one of the most important elections in recent memory for the "CBS This Morning" series At America's Crossroads.