Retail industry

• Costco sues for Trump tariff refunds before Supreme Court rules on if they're illegal - Costco joins dozens of other companies that are seeking to protect their rights to refunds of Trump's tariffs without first waiting for the Supreme Court.
• How Black Friday became a retail letdown: 'To sustain the ride, they started to dilute it' - Black Friday used to be the biggest in-person shopping event of the year, but for six straight years, online sales have outpaced stores.