<p>An inquiry led by a U.S. attorney in Washington into Jerome Powell was dropped last month after a federal judge blocked grand jury subpoenas related to the investigation.</p>
<p>The action concluded the probe following the court ruling that prevented the use of the subpoenas in the grand jury process.</p>
<p>The development ends the inquiry without filing charges or pursuing further legal steps in relation to Powell, according to the available information.</p>
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