USA - Two weeks ago Joe Biden warned Americans to expect “real” food shortages. He wasn’t kidding. Two weeks later and Walgreens starts rationing baby formula. A national shortage of baby formula brought on by pandemic-related supply-chain issues has forced US retailers such as Walgreens to ration the all-important product. The company – the second-largest pharmacy store chain in the United States behind CVS – said Friday that amid the supply-chain crunch, it is limiting customers to three infant and toddler formula product purchases at a time, at its 9,021 US locations.