The federal prosecutor Piro, who is in charge of the criminal investigation into Powell, said that the U.S. Attorney's Office had repeatedly contacted the Federal Reserve to discuss issues of cost overruns and the chairman's testimony in Congress, but was ignored each time, leaving no choice but to resort to legal proceedings—though this is not a threat. The word 'prosecution' came from Mr. Powell himself, not anyone else. If they had responded to our communications back then, none of this would have happened.