An influx of US corn exports to Vietnam is the by-product of a DDGS deal thrashed out between the two countries in November 2017, and could see Vietnam re-emerge as a regular export destination for US corn. The country has picked up a number of panamax-sized cargoes in recent weeks for delivery through March and April, according to market sources, with some of the buying driven by the US currently offering the cheapest origin for corn globally. But a change to the regulations around fumigation has also enabled US corn to access a market that has not seen regular export flows in recent months, with the country importing around 350,000 mt of corn from Argentina every month.