Donald Trump has launched an extraordinary attack on the Federal Reserve and its chairman Jerome Powell while seemingly demanding US companies cease trading with China “immediately” as the rival superpower upped the ante in their ongoing trade war by hiking tariffs on $75bn (£61bn) of American goods.After Mr Powell addressed a central bank symposium in Wyoming and declined to say he would cut interest rates in accordance with the president’s wishes, the commander-in-chief exploded on Twitter and asked who is the “the bigger enemy” of the US, Mr Powell or Chinese premier Xi Jinping.
