PHILADELPHIA (AP) — From Maine to Texas, dockworkers at 36 ports across the eastern United States are on strike for the first time in decades, a work stoppage that could snarl supply chains and cause shortages and higher prices if it stretches on for more than a few weeks.

U.S. ports from Maine to Texas shut down Tuesday when the union representing about 45,000 dockworkers went on strike for the first time since 1977. A lengthy shutdown could raise prices on goods around the country and potentially cause shortages and price increases at big and small retailers alike as the holiday shopping season —