For many years, the global financial world hung on Alan Greenspan’s words, his facial expressions, and his every movement. Even the thickness of his briefcase was observed, evaluated and interpreted. For nearly 20 years, Alan Greenspan steered United States  monetary policy — and with it, the economy — as Chairman of the US central bank, the Federal Reserve , or Fed for short. He was "Mr. Dollar," the guru of the international financial world, the pacemaker of the global economy. George W. Bush