Truckers protesting California's statute known as AB5, their “Gig Worker Law” have effectively closed down the Port of Oakland.

Oakland port truckers began actions against the law formally known as AB5 on Monday. They picketed and parked tractor-trailers to choke terminal gate access, grinding trade through the eighth-busiest U.S. container seaport to a virtual halt on Wednesday.

Idling the 2,100 trucks that ferry goods at the Northern California seaport each day is hindering exports of fresh beef and pork, dairy products and nuts as well as imports like green coffee, electronics and construction materials.

Why are supply chains still snarled? Labor protests against intrusive government regulation are one reason. Resolving disputes such as this would go a long way in easing inflation.