The two biggest impacts on commodity prices right now are politics and the weather, with the latter oddly being more predictable. U.S. President Donald Trump held off his press announcement regarding China until after the market closed but prices were still pressured by it all day.  The list of grievances against China was long before Beijing asserted stronger control over Hong Kong and Mr. Trump’s announcement today about retaliatory measures retained a certain vagueness. Among other punitive measures, he said the U.S. would begin the process of eliminating policy exemptions that provide special treatment to Hong Kong. It is probably best to assume the worst and that Hong Kong will reciprocate with higher tariffs on American go...