Why ending pandemic lockdowns created new shortages of ketchup and everything else

There have been numerous stories in recent days about problems with the supply chain as the economy starts back up after last year's unprecedented shutdowns. Everything is connected and a hiccup here or there can cause delays and price increases for you and me. To understand what's going on and how long these types of shortages will last, CNN went to MIT professor Yossi Sheffi, who wrote the book on Covid and the supply chain, The New (Ab)Normal: Reshaping Business and Supply Chain Strategy Beyond Covid-19.