Grain farming

FILE - In this May 10, 2019, file photo John Deere Agricultural machinery made by Deere & Company sits staged for transport near cranes at the Port of Tacoma in Tacoma, Wash. Deere’s fiscal second-quarter earnings were a mixed bag and the agricultural equipment maker lowered its full-year outlook as the trade war between the U.S. and China intensifies and conditions in the agricultural sector soften. (AP Photo/Ted S. Warren, File)

FILE - In this Feb. 27, 2019, file photo, Agriculture Secretary Sonny Perdue testifies during a House Agriculture Committee hearing on Capitol Hill in Washington. Perdue says his agency is “in the throes of constructing” an aid package for farmers hurt by retaliatory tariffs, but he could not say when it would be ready. Perdue says his agency is seeking feedback from producers about the strengths and weaknesses of last year’s relief package, valued at nearly $12 billion. (AP Photo/Jacquelyn Martin, File)

Vice President Mike Pence, left, talks with Sen. Todd Young, R-Ind., as they enter a Senate Republican policy luncheon at the Capitol in Washington, Tuesday, May 14, 2019. (AP Photo/J. Scott Applewhite)

FILE - In this March 5, 2019, file photo, cargo containers are staged near cranes at the Port of Tacoma, in Tacoma, Wash. China has announced tariff hikes on $60 billion of U.S. goods in retaliation for President Donald Trump's escalation of a fight over technology and other trade disputes. The Finance Ministry said Monday, May 13, the penalty duties of 5% to 25% on hundreds of U.S. products including batteries, spinach and coffee take effect June 1. (AP Photo/Ted S. Warren, File)

FILE - In this March 5, 2019, file photo, cargo containers are staged near cranes at the Port of Tacoma, in Tacoma, Wash. China has announced tariff hikes on $60 billion of U.S. goods in retaliation for President Donald Trump's escalation of a fight over technology and other trade disputes. The Finance Ministry said Monday, May 13, the penalty duties of 5% to 25% on hundreds of U.S. products including batteries, spinach and coffee take effect June 1. (AP Photo/Ted S. Warren, File)

This Monday, March 18, 2019 photo taken by the South Dakota Civil Air Patrol and provided by the Iowa Department of Homeland Security and Emergency Management, shows flooding along the Missouri River in rural Iowa north of Omaha, Neb. (Iowa Homeland Security and Emergency Management via AP)

Bottles of Canola Harvest brand canola oil, manufactured by Canadian agribusiness firm Richardson International, are seen on the shelf of a grocery store in Beijing, Wednesday, March 6, 2019. One of Canada's largest grain processors said Tuesday that China has revoked its permit to export canola there, a move that some saw as retaliation for the Canadian government's arrest of a top executive for the Chinese tech giant Huawei. (AP Photo/Mark Schiefelbein)