Lawrence Summers, professor of economics at Harvard University and secretary of the Treasury under President Bill Clinton, has been outspoken in arguing that monetary and fiscal have been too expansionary. In February 2021, just before Congress passed the American Rescure Plan, which increased federal government spending by $1.9 trillion, Summers cautioned that “there is a chance that macroeconomic stimulus on a scale closer to World War II levels than normal recession levels will set off inflationary pressures of a kind we have not seen in a generation, with consequences for the value of the dollar and financial stability.”
In a brief CNN interview found at this LINK, Summers indicates that he remains concerned that inflation may persist at high levels for a longer period than many other economists, including policymakers at the Federal Reserve, believe.
Source for quote: Lawrence H. Summers, “The Biden Stimulus Is Admirably Ambitious. But It Brings Some Big Risks, Too,” Washington Post, February 4, 2021.