Fed likely to renew pledge to use all tools to brace economy

(Reuters) - The Federal Reserve, which has pumped trillions in emergency funding into U.S. financial markets to stem the damage from the coronavirus pandemic, is expected on Wednesday to reiterate its promise to do whatever it takes to support the world's largest economy.The U.S. central bank may also signal how long, and by what benchmark, it plans to leave interest rates near zero after the recovery begins from what many economists forecast will be the sharpest downturn in recorded U.S...