03 Apr 2019 --- The supply of key fresh produce to the US could be under threat following President Donald Trump’s ominous warnings about abruptly closing the US-Mexico border. The President claims shutting down the border is the only way to stop immigrants crossing and stem the flow of drug smuggling – but if he actually does follow through with his threat, what does that mean for trade across the border, in particular, the availability of products – such avocados and dairy? Experts warn consumers and producers on both sides could be severely hit.