From California to Georgia, farmers can’t find enough workers to harvest their crops or milk their cows. Combined with Congress’s decades-long failure to act on long-promised comprehensive immigration reform, the result is that U.S. consumers are paying more for a less-secure food supply as more production moves south of the Mexican border in search of farm labor.

As federal agents sweep farming operations across the country in search of unauthorized workers, are they targeting agriculture? The government says no, but the farm sector says it's feeling the heat.

If the U.S. and Europe agree to discuss agricultural issues in their upcoming trade negotiations, geographical indications could prove a formidable obstacle to achieving success.