Key Highlights
- The investigation relates to Powell's testimony about the cost overruns for the Fed's building renovation.
- Powell received grand jury subpoenas as part of the Justice Department's inquiry.
- He described the investigation as a significant threat to the independence of the Federal Reserve.
- Powell believes the probe is a result of his defiance against Trump's public pressure to lower interest rates.
- This marks the latest instance of a government official facing scrutiny after conflicting with Trump.


