will be sworn in as Federal Reserve chair by President on Friday during a ceremony at the White House, an official said. Warsh will become the central bank’s 17th leader and succeed , who is serving in a temporary capacity after his official leadership term ended last week. A White House official confirmed the plans on condition of anonymity before it was formally announced. The US Senate confirmed Warsh earlier this month on a 54-45 vote, the slimmest confirmation margin ever for a Fed chair.