From their press release:

Western Growers, one of California's largest and most prominent agricultural trade associations, today announced its endorsement of Senator Dianne Feinstein (D-CA) for reelection to the United States Senate.

"Senator Feinstein has represented California with great integrity, honor and skill," said Tom Nassif, President and CEO of Western Growers. "She has been an outstanding member of the United States Senate and has proven that she is a true friend of our industry. Senator Feinstein has consistently supported California agriculture and has been a strong leader for the industry on critical issues such as immigration reform..."

...Western Growers is an agricultural trade association whose 3,000 members grow, pack and ship 90 percent of the fresh vegetables and nearly 70 percent of the fresh fruit and nuts grown in Arizona and California, about one-half of the nation's fresh produce. For more information, visit wga.com

Meanwhile, in older news:

Shortly before Thanksgiving last year, Tom Nassif did something few law-abiding citizens would ever think to do: He called the U.S. Border Patrol here and suggested agents stop manning a highway checkpoint intended to keep illegal immigrants out of the country.

A former U.S. ambassador and currently the president of a powerful farming association, Mr. Nassif told officials that the agency couldn't have picked a worse time to beef up enforcement. Didn't they know it was lettuce season?

Dianne Feinstein, valiantly protecting the U.S. from the specter of mythical $10 a head lettuce by trying to make the Senate amnesty even worse.

In addition to Nassif, a few other favorites serve on the board of the Western Growers Association: Luawanna Hallstrom of Oceanside's Singh & Sons (what harm could illegal aliens do on a Marine Base anyway?) and perennial "crops rotting in the fields" quote source Jon Vessey. Use the search function to find many more quotes from Dianne Feinstein's strong supporters.