AdvertisementFarmers Hope For China Trade Deal, But For Now They Worry About Tariffs' Impact03:45Download AudioResumeSeptember 13, 2018Jim ZarrolifacebookEmailThe Big Iron Farm Show draws thousands of farmers and farm equipment-makers to a fairground in West Fargo, N.D. For many this year, concerns about crop yields have been eclipsed by worries about President Trump's trade policies. (NPR)