This colloquium will offer students an opportunity to examine current tax policy issues in depth and at an advanced level, with discussions led by policymakers, economists, and other tax experts. The course will discuss various current and recent legislative proposals at a detailed level and examine the economic, tax policy, and political considerations underlying the decisions that have been made in each proposal. This will include infrastructure, wealth tax, cross-border tax, consumption taxes and other politically salient tax policy topics. It will explore the economic and policy literature surrounding the issues of economic welfare and competitiveness. The course will also examine issues such as tax expenditures, debt vs. equity, cost recovery, and various tax incentives. Reading materials generally will be supplied and will include economic and tax policy papers, legislative proposals, and technical explanations. The course is intended to be highly interactive with students discussing design and policy issues with leading experts in the field. The grade for this course will be based primarily on papers that students submit addressing policy topics discussed by the guest speakers. Useful class participation will be taken into account as a plus in determining the final grade. There will be no final exam.