The sources say that the US has sent a "long" and "tough" list of requests to Vietnam as part of tariff negotiations between the two countries. One part of that being a call for Vietnam to effectively cut its reliance on Chinese supply chains. This was always going to be one of the trickier deals to work out as Vietnam is playing this on the fence for the most part.If you must know, the US is pretty mad about the whole situation as Vietnam is a hot spot for China to get involved in origin washing as noted previously here. This article was written by Justin Low at www.forexlive.com.