Natasha Sarin, a Post contributing columnist, is an associate professor of law at Yale Law School with a secondary appointment at the Yale School of Management in the Finance Department. Previously, she served as deputy assistant secretary for economic policy and later as a counselor to Treasury Secretary Janet L. Yellen. Mark J. Mazur served in various roles at the Treasury Department in both the Biden and the Obama administrations, including as assistant secretary for tax policy. From 2017 to 2021, he was the director of the Urban-Brookings Tax Policy Center.