Jerome H. Powell, the Federal Reserve chair, is on the cusp of accomplishing something that would have seemed like a victory a year ago: Central bankers are expected to announce a plan to wean the economy off their asset-buying program on Wednesday without roiling markets, a delicate maneuver that was in no way assured.Instead, Mr. Powell and his colleagues face pressing questions about their next steps.Inflation is running at its fastest pace in roughly three decades, and hopes that the jump in prices will quickly have dimmed as supply chain snarls deepen and fuel costs rise. Wages are increasing swiftly, and consumers and businesses are coming to expect faster price increases, pumping up the risk that high inflation will become a fixture as employers and workers adjust their behavior.Though the Fed is expected to announce this week that …
