在国会作证后，鲍威尔向参议员提交了一封信

Core Viewpoint - The article discusses the ongoing scrutiny of Federal Reserve Chairman Jerome Powell regarding a $2.5 billion renovation project, highlighting issues of cost overruns and transparency in communication with Congress [1][2]. Group 1: Renovation Project Details - Powell submitted a four-page letter to the Senate Banking Committee detailing the renovation project, which has exceeded its budget by approximately $700 million [1]. - The project was initially approved in 2017 and is expected to be completed next year, with cost increases attributed to rising prices of materials, equipment, and labor, as well as unforeseen issues like asbestos and soil contamination [1]. Group 2: Political Context - The timing of Powell's letter coincides with a criminal investigation by the U.S. Department of Justice, which has issued subpoenas to the Federal Reserve [1]. - Despite Trump administration officials accusing Powell of insufficiently explaining the renovation's scope, Powell emphasized the Federal Reserve's commitment to transparency and congressional oversight [1]. - Trump has publicly criticized Powell and called for his resignation, with Powell's term as Fed Chairman set to expire in May of this year [2].