Washington-US President Donald Trump has again sharply attacked the head of the US Federal Reserve Fed, Jerome Powell, and thus questioned the independence of the central bank. The 72 -year -old Powell was a “loose” – a loser – Trump wrote on Monday in his online network Truth Social. He pushed the Fed chairman again to lower the key interest rates immediately. If he does not act immediately, growth will slow down. The US exchanges reacted to Trump’s threats with losses. The indices of Dow Jones and the S&P 500 temporarily lost value by more than two percent