Alan Greenspan, then-President Ronald Reagan’s nominee as chairman of the Federal Reserve, awaits the start of his confirmation hearing before the Senate Banking Committee in Washington, July 21, 1987. (George Tames/The New York Times) By COLBY SMITH and BEN CASSELMAN At his swearing-in ceremony as chair of the Federal Reserve last month, Kevin M. Warsh singled out just one of his predecessors as a role model for running a central bank: Alan Greenspan, who led the Fed for nearly two decades…
