Hay is the largest containerized export from the Northwest Seaport Alliance at Seattle and Tacoma. Increasing tensions between the Pacific Maritime Association (PMA) and the International Longshore and Warehouse Union (ILWU) threatens an already ailing hay market.
For a great update and more context, check out What is Going on With Shipping https://www.youtube.com/watch?v=E7RENsnk7bY.