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

Longshoremen at docks along the US East and Gulf coasts have gone on strike for the first time since 1977 as the union takes a hardline stance against automation found at other ports around the world.