FILE - Treasury Secretary Janet Yellen speaks after touring the IRS New Carrolton Federal Building, Sept. 15, 2022, in Lanham, Md. Yellen made her reputation as a Federal Reserve chair who helped steer the U.S. into the longest expansion in its history; now, she’s trying to use global energy markets as a vise to stop a war and keep oil prices from rushing upward this winter. (AP Photo/Alex Brandon, File)