The White House is monitoring labor talks in the logistics industry as unions representing 115,000 rail workers and 22,000 West Coast dockworkers negotiate fresh contracts, but won’t get directly involved in either bargaining process now, its supply chain envoy said.

Each wave of supply shock to hit the global economy during the pandemic seems to produce a different scapegoat.

The union representing about 22,000 West Coast dockworkers and their employers are continuing negotiations for a new labor contract past the July 1 expiration of their previous pact and said the ports — among them the U.S.’s busiest — will keep functioning.

The Port of Los Angeles has enlisted the help of the White House to clear a backlog of rail-bound containers that’s tripled since February.

The Port of Los Angeles is preparing for the early arrival of the 2022 peak season for cargo as retailers stock up on back-to-school and fast-fashion products despite high inventory levels.

Removing sea mines near Ukraine’s key ports could take months, and hundreds of seafarers are still stranded in the region following Russia’s invasion of the country, according to the United Nations agency responsible for shipping safety.

Optimism is growing that port delays and a trucking shortage in Shanghai are quickly abating, providing some relief to supply chains, though major hurdles remain.

As the U.S.’s largest ports in California moved record amounts of cargo amid pandemic-induced supply chain bottlenecks, union dockworkers strengthened their indispensable role in the nation’s logistics network.

European leaders are desperately trying to figure out how to get grain out of Ukraine, whose exports are normally bigger than the entire European Union’s.