Nearly 20% of office spaces across the U.S. are vacant, new data shows. Many companies solidified their back-to-office policies in the past year, so why are buildings emptier than ever? And in Shanghai, retail vacancies remain higher than pre-pandemic levels — yet small-business owners are struggling to find affordable storefronts to lease. Also in this episode: The Biden administration passed a new rule that could classify millions more gig workers as employees, and economists aren’t concerned about the U.S. trade deficit.