Why are the South American Wine markets suffering currently with their exports to the US. Well it is not difficulty to find out. Millions of dollars worth of Australian wine deemed unfit to drink by fussy Americans is to be dumped in America’s less discerning markets. Australia’s largest wine company, Treasury Wine Estates, says it’s taking the move because it over-estimated the US market demand and the wine is not suitable for ageing. “TWE’s leadership team in the Americas believes old and obsolete…