SAN DIEGO (AP) — One of California’s most influential agricultural companies filed a lawsuit Monday against the state to stop a contentious law to help farmworkers unionize that Democratic Gov. Gavin Newsom reluctantly signed two years ago after pressure from the White House.

The action by the Wonderful Co. comes as it battles the United Farm Workers over a newly formed UFW local of 640 workers at one of its businesses. The $6 billion company founded by Stewart and Lynda Resnick, who have donated to President Joe Biden and Newsom, makes a host of products recognizable to most grocery store shoppers, including Halos mandarin oranges, Wonderful Pistachios, POM Wonderful pomegranate juice and Fiji Water brands.

Farmworkers aren’t covered by federal rules for labor organizing in the United States. But California, which harvests much of the country’s produce, enacted a law and created a special board in 1975 to protect their right to unionize. That came after the storied work of Cesar Chavez and Dolores Huerta to organize farmworkers across California under what later became the United Farm Workers.