Economist; Professor @UCLA_Law; sr fellow @PIIE; former tax DAS at Treasury; Author, Open: The Progressive Case for Free Trade, Immigration, and Global Capital

Joined January 2012
218 Photos and videos
(1/2) Looking forward to talking tax @HamiltonProj in one week, on June 16! At the event on business tax reform (link next page), the conversation will focus on 3 new business tax proposals, including my own, one by @elenaspatel et al., and one by @dashching et al.
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(2)/2 I'll post a thread on my paper soon. Revenue from the corporate tax can improve tax fairness, efficiency, and alignment with reforms abroad. This can counter distortions in favor of foreign activity. In contrast, tariffs create new distortions. hamiltonproject.org/event/ta…
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Kimberly Clausing retweeted
New from @abhiecon and @The_Budget_Lab: immigration policies affect entrepreneurship and productivity growth. Even assuming a return to baseline immigration in 2029, the current slowdown in immigration will likely have long-run impacts on business formation and productivity. 1/
In a new report by @The_Budget_Lab, we show that this administration's restrictive immigration policies--even if undone after 2028--will make America less dynamic and productive for decades to come. (1/4) budgetlab.yale.edu/research/…
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Kimberly Clausing retweeted
New @nytopinion: "I first met Jerome Powell, the departing head of the Federal Reserve, in late 2011. I was working for Barack Obama, and Mr. Powell was interviewing for a job as one of the Fed’s governors. He was not our first choice. To be honest, he wasn’t even our second."
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More good news for the rule of law (re. tariffs). So happy to join the efforts of @stanveuger on the amicus brief.
The Section 122 tariffs are unlawful, as well.
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Good news for global cooperation! This effort will help develop and strengthen domestic carbon pricing policies. See also climate.ec.europa.eu/news-ot…
Brasil preside encontro histórico da Coalizão Aberta de Mercados de Carbono, criado na COP30 em Belém. Com adesão da China e União Europeia, além de outros 10 países, ação promete contribuir com a descarbonização da economia.
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Huge congrats to @JustinWolfers on his new project; this @nytimes piece has a good introduction. This effort will expand his reach in teaching the world economics. I wish him every success.
A funny thing happened on the way to launch day. The @nytimes wrote about Platypus Economics. Brian O'Keefe asked tons of questions, interviewed all sorts of folks, and produced something I'm a little stunned by. nytimes.com/2026/05/06/busin… (gift link)
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Kimberly Clausing retweeted
Yesterday, Trump lifted UK whiskey tariffs that were supposedly (by law) about a "balance of payments" crisis. Today, he's imposing EU automotive tariffs that were supposedly (by law) about "national security". It's all so manifestly ridiculous.
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Kimberly Clausing retweeted
Excited to be starting as Director of the Mossavar-Rahmani Center for Business & Government at the Harvard Kennedy School. M-RCBG has been a terrific hub for work on economic issues from macro to regulation to health to climate and I look forward to building on that great work.
We welcome @jasonfurman as the new Director at the Mossavar-Rahmani Center for Business and Government at the Harvard Kennedy School We’re delighted to have Jason, a long standing affiliate of @HarvardBizGov, as our new Director and to share this announcement from our colleagues at @Kennedy_School. We look forward to working together to advance rigorous research and impactful dialogue at the intersection of business and government.
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Me too.
I hope Powell stays on the FOMC till the end of his term in 2028.
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Kimberly Clausing retweeted
UPS confirms it will automatically send its customers any IEEPA tariffs they paid - once it receives a refund from the government: ups.com/us/en/shipping/inter…
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And also re-upping my thread on the paper here! x.com/KClausing/status/20469…

Analyzing climate change, international trade, & international taxation, @KClausing finds adequate incentive mechanisms are pivotal to resolving global collective action problems, & could strengthen collective efforts in the face of would-be spoilers. piie.com/publications/workin…
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(1/6) 🧵 My new working paper is out today @PIIE, comparing three global collective action problems that occupy my recent scholarly work: international tax, climate, and world trade. I look at both the nature of these problems, and lessons for progress in times ahead.
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(5/6) Such mechanisms have the potential to fuel cooperative solutions to global collective action problems, and they can also strengthen coalitions in the face of disruptive “spoilers”, a policy problem that may be particularly salient today.
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(6/6) At present, the world needs collective action around the problem of collective action. Coalitions of the willing can show the way forward, but it will require both pragmatism and a lot of work, as pointed out recently by Canadian PM Carney. nytimes.com/interactive/2026…
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