Fed's Powell says Fed to keep on with crisis fight

WASHINGTON (Reuters) - Federal Reserve Chair Jerome Powell on Friday reiterated the U.S. central bank's promise to use its tools to shore up the economy amid the coronavirus pandemic, even as investor attention is turning to the next phase of its response."This is an emergency of a nature we haven't really seen before," Powell, a graduate of Princeton University, told Alan Blinder, an economics professor at the Ivy League college and a former Fed vice chair, in a webcast event. "We crossed a lot..