Workers pick onions on a Vidalia onion farm in Lyons, Ga. Farmers are concerned that the state's new legislation meant to bar illegal immigrants from the workforce will scare away migrant laborers. David Goldman/AP hide caption

itoggle caption David Goldman/AP

Crowds gather at L.A. Street Food Fest last year, where food trucks competed for awards such as "Best in Show" and "People's Choice Award." Mark Krynsky/Flickr hide caption

itoggle caption Mark Krynsky/Flickr