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Pierre-Louis Vézina

@plvezina.bsky.social
2.1K followers 1.2K following 229 posts

Economist at King's College London. Trade, development, migration, political madness, grand corruption. pierrelouisvezina@weebly.com

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Reposted by Pierre-Louis Vézina
Michael Clemens @mclem.org · 01/10/2026
"It takes a lot of effort to make immigration look zero-sum" A forceful piece by the brilliant @jerusalem.bsky.social on what it might take for populist politicians to take their migration-skeptical supporters' concerns seriously—>
theargumentmag.com
Stop trying to make xenophobia sound smart
No one actually cares about how immigration impacts the economy
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Standard Error Research Editors @standarderror.bsky.social · 01/10/2026
🎃👻 Spooky season is here—and so is Episode 1 of 𝙏𝙖𝙡𝙠 𝙖𝙩 𝙩𝙝𝙚 𝙏𝙤𝙥, Standard Error’s new podcast with @o.simardcasanova.net and @sameyler.bsky.social! 𝗦𝗲𝗮𝘀𝗼𝗻 𝗼𝗳 𝗗𝗿𝗲𝗮𝗱: job market papers, existential crises, and the special horror of job market season. 🕯️ stderr-editors.com/blog/season-...
stderr-editors.com
Season of Dread: How to Write a Job Market Paper and Live to Tell About It
Spooky season is here—and so is the launch of Talk at the Top, with a pilot episode on the real horror of finishing an economics PhD: writing your job market paper.
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Juan Moreno-Cruz @jmorenocruz.bsky.social · 01/10/2026
It is not mind-boggling. It is very straightforward.
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Pierre-Louis Vézina @plvezina.bsky.social · 16/09/2026
#GrandCorruption
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jeeanews.bsky.social @jeeanews.bsky.social · 11/09/2026
Forthcoming article "Recovering Within-Country Inequality from Trade Data" by Dorothee Hillrichs and Gonzague Vannoorenberghe @eeanews.bsky.social doi.org/10.1093/jeea...
doi.org
Recovering Within-Country Inequality from Trade Data
Abstract. This paper develops a novel method to estimate inequality within a country based on what the country imports. If preferences are non-homothetic,
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VoxDev @voxdev.bsky.social · 10/09/2026
🆕Startups in Africa Today on VoxDev, Emanuele Colonnelli (Chicago Booth), Marcio Cruz (World Bank), Mariana Pereira-López (World Bank), Tommaso Porzio (Columbia Business School) & Chun Zhao (Stanford University) discuss Africa’s startup ecosystem: ow.ly/rKrN50ZLMnF
ow.ly
Startups in Africa
Africa’s startup ecosystem is small but growing fast. We built a new dataset to study who starts these firms, what capital they want, and who finances them. Startups want equity and investors with local knowledge, yet most capital comes from abroad and disproportionately reaches founders with foreign exposure. The same forces that make the ecosystem foreign also appear to keep it small.
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Ed Conway @edconway.bsky.social · 08/09/2026
👀 Global shipping industry group makes its first public intervention since it was founded 60 years ago, to warn that the rules governing global shipping are breaking down. "Without maritime trade... the global economy as we know it would come to a sudden halt". www.ft.com/content/c651...
ft.com
Global shipping rules are collapsing, say maritime nations
Wars and the growth of the shadow fleet are causing a ‘structural shift’ in global trade, according to 18 maritime authorities
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VoxEU @ CEPR @voxeu.org · 08/09/2026
K Manova, D Novy, @thomsampson.bsky.social, & A Tang show that confusion about the current state of tariff policy led to a decline in US imports similar in size to the reduction caused by tariff increases alone. Confusion doubled the negative impact of tariffs. cepr.org/voxeu/column... #EconSky
This figure plots the decline in US imports by origin country due to higher tariffs (blue) and tariff confusion (number of announcements, orange) in the month with each country’s highest average US tariff across products. Total import decline: mean 13%, standard deviation 8%. Share due to tariff confusion: mean 50%, standard deviation 15%.

The year 2025 was unprecedented in the frequency, complexity, and volatility of US trade policy interventions. This column uses a new database tracking US tariff announcements during the year to show that confusion about the current state of tariff policy led to a decline in US imports that was similar in size to the reduction caused by tariff increases alone, meaning that confusion doubled the negative impact of tariffs. Product customisation, relationship trust, and partner reputation can help firms maintain trade activity during information shocks.
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VoxDev @voxdev.bsky.social · 07/09/2026
🆕 Mining for peace: Why and how the location of new mines shapes conflict risk Today on VoxDev w/ @rolandhodler.bsky.social (University of St. Gallen), @paulschaudt.bsky.social (KU Leuven) & Alberto Vesperoni (King's College London): voxdev.org/topic/instit...
voxdev.org
Mining for peace: Why and how the location of new mines shapes conflict risk
Whether a new mine raises or lowers a country's risk of violence depends not only on the mine itself, but on the country's entire ethnic and mining geography. Results for Sierra Leone and sub-Saharan ...
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Michael Clemens @mclem.org · 12/08/2026
Incredible. When E—n M—k & his crew obliterated USAID in a weekend, they deleted a vast trove of publicly-funded knowledge: the Development Experience Clearinghouse. A Canadian high school student (!) happened to have downloaded the entire thing for a project. AidData has now posted it for all.
aiddata.org
Before reimagining development data, remember what we’ve learned
Why we’re publishing a free, searchable, and ungated archive featuring a quarter-century of USAID evaluation reports.
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Pierre-Louis Vézina @plvezina.bsky.social · 27/07/2026
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Pierre-Louis Vézina @plvezina.bsky.social · 19/07/2026
Most white people born in Europe don't contribute much to society, but Declan Rice and Harry Kane certainly do. "A trutch that I wish more politicians would acknowledge".
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Reposted by Pierre-Louis Vézina
Michael Clemens @mclem.org · 18/07/2026
A story in three acts. Act 1: In February, George Borjas released a paper justifying the US President's $100,000 H-1B tax. www.nber.org/papers/w34793 Below is that version's mandatory @nber.org disclosure section, when it was released in February and revised in March.
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Jonathan Portes @jdportes.bsky.social · 17/07/2026
Interesting paper. Key chart is below. academic.oup.com/ej/advance-a...
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jeeanews.bsky.social @jeeanews.bsky.social · 16/07/2026
Forthcoming article "Mining for Peace" by @rolandhodler.bsky.social @paulschaudt.bsky.social and @albertovesperoni.bsky.social @eeanews.bsky.social doi.org/10.1093/jeea...
doi.org
Mining for Peace
Abstract. We study the feasibility of opening new mines in ethnically diverse countries without escalating the risk of conflict. We propose a theoretical m
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Pierre-Louis Vézina @plvezina.bsky.social · 01/07/2026
#RefugeeAllStars
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Dean Yang @deanyang.bsky.social · 24/06/2026
Development economics finally has a global professional home. Today we launch @ideadevecon.bsky.social ... Open to every development economist, everywhere. Join the community: idea.devecon.org Please share 🌍
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Pierre-Louis Vézina @plvezina.bsky.social · 18/06/2026
And here's the correlation with odds of making it to the quarterfinals 🤓
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Alexandre Afonso @alexandreafonso.bsky.social · 18/06/2026
I made a small visualisation of the birthplace and nation represented of players at the World Cup. Stunning 96(!) players born in France. You can play with it here: claude.ai/public/artif...
Network diagram on a dark green background titled "The Birthplace Map: World Cup 2026 Squads," with the subtitle "node size = degree (players + countries connected)." Gold circles represent the 48 World Cup nations and smaller grey-green circles represent countries that only supplied players without fielding their own team, positioned roughly according to real-world geography (Americas on the left, Africa and Europe in the center, Asia and Oceania on the right). Curved green lines connect birth countries to the nations players represent, with thicker lines indicating more players. France is the largest node by far, connected to 15 countries totaling 76 players, including thick lines to Algeria, Haiti, Senegal, Congo DR, and Côte d'Ivoire. The Netherlands is the second-largest hub, with an especially thick line to Curaçao (26 players). Other notable hubs include Germany, Bosnia and Herzegovina, Morocco, and the United Kingdom (split into England and Scotland). A legend at the bottom explains the gold/grey node colors and the line-width scale; a footer credits the source as worldcup.csv, 1,248 squad entries, 282 cross-border players.
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Pierre-Louis Vézina @plvezina.bsky.social · 14/06/2026
#RefugeeAllStars World Cup 2026: Nestory Irankunda - the refugee who quit Bayern to make Australia history - BBC Sport share.google/wCmKQ4tHyk78...
share.google
World Cup 2026: Nestory Irankunda - the refugee who quit Bayern to make Australia history
Nestory Irankunda was born as a refugee in Tanzania before becoming Australian record breaker with goal in victory over Turkey.
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School of Politics and Economics @kcl-spe.bsky.social · 08/06/2026
Geopolitical tensions are increasingly influencing where companies choose to invest, according to 🆕 research co-authored by @plvezina.bsky.social The study suggests firms are now more likely to favour politically-aligned countries when making foreign investments 🪙 ⬇️ www.kcl.ac.uk/news/geopoli...
kcl.ac.uk
Study finds geopolitics playing increasing role in investment decisions | King's College London
Geopolitical tensions are increasingly influencing where companies choose to invest, according to new research co-authored by a King’s academic that suggests firms are becoming more likely to favour p...
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Pierre-Louis Vézina @plvezina.bsky.social · 04/06/2026
#RefugeeAllStars Antonio Rüdiger: ‘Refugees have no other choice – it’s important they be listened to’ | Football | The Guardian share.google/OGx3r9lwyclO...
share.google
Antonio Rüdiger: ‘Refugees have no other choice – it’s important they be listened to’
Drawing on his own family’s experience, the Real Madrid and Germany defender tells Sam Cunningham why he is advocating for refugees
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Pierre-Louis Vézina @plvezina.bsky.social · 03/06/2026
Now out in the Journal of Comparative Economics and open access (not sure who pays for that :) www.sciencedirect.com/science/arti...
sciencedirect.com
Geopolitical fragmentation and friendshoring evidence from project-level foreign investments data
This paper examines the relationship between geopolitical distance and foreign investments over time, countries, and sectors. The analysis uses compre…
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Santiago Sanchez-Pages @sanpages.eurosky.social · 01/06/2026
In June 15-16, the 1st SPEIN Workshop will bring to @kcl-spe.bsky.social economists, economic historians, and political scientists studying the political economy of Spain. If you work in or are interested in the field and would like to learn more, get in touch! www.tonirodon.cat/spein-confer...
tonirodon.cat
SPEIN Conference
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Standard Error Research Editors @standarderror.bsky.social · 29/05/2026
📈📉 Standard Error is delighted to announce that Sarah Winton (LSE ’26) has been awarded the Best Paper Prize at the 7th Workshop on the Economics and Politics of Migration. 🧵 1/9 stderr-editors.com/blog/best-pa... #Migration #Refugees #LaborEconomics #DevelopmentEconomics
stderr-editors.com
Standard Error awards Best Paper Prize at Rome migration research workshop to Sarah Winton
The research finds that Jordan's 2016 policy granting Syrian refugees work authorization increased overall output by 10.9% and raised Jordanians' average wages by nearly 1%.
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Pierre-Louis Vézina @plvezina.bsky.social · 29/05/2026
Thank Rome. It was a total blast.
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Sam Eyler-Driscoll 🍉🌻🍁 @sameyler.bsky.social · 27/05/2026
Delighted to arrive today to Sapienza University for the 7th Workshop on the Economics and Politics of Migration, where @standarderror.bsky.social will be selecting and presenting the workshop Best Paper Prize ✨✨✨ Watch this space! cepr.org/events/7th-w...
cepr.org
7th Workshop on the Economics and Politics of Migration
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King's QPE @kingsqpe.bsky.social · 27/05/2026
Excited for tomorrow: the 7th Workshop on the Economics and Politics of Migration kicks off in Rome! We're happy to co-organize this fantastic event together with @cepr.org , @ebrd.bsky.social, and Sapienza University. We’ve got a great program lined up 👇 cepr.org/system/files...
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VoxEU @ CEPR @voxeu.org · 27/05/2026
@pgourinchas.bsky.social, Gene Kindberg-Hanlon, Manasa Patnam, Lorenzo Rotunno, & Michele Ruta show that permanent tariffs generally have modest effects on current account balances and are a weak tool for rebalancing. cepr.org/voxeu/column... #EconSky
Figure: More traditional explanations of global imbalances. Substantial fiscal deficits in the US, and the effects of the real estate slowdown on consumption in China. While these factors do not explain all the widening of global imbalances, they have had material effects on aggregate saving and investment in both economies.

Has the rise of industrial policy driven an increase in global current account imbalances? Can tariffs fix them? This column revisits these questions. Looking at the impact of industrial policy and tariffs on savings and investment, whose difference is identically equal to the current account, the authors argue that ‘successful’ industrial policy that durably increases output can paradoxically shrink imbalances in surplus economies. However, when combined with financial policies that persistently depress consumption, these policies can sizably increase external surpluses. Instead, we find that permanent tariffs generally have modest effects on current account balances and are a weak tool for rebalancing.
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Pierre-Louis Vézina @plvezina.bsky.social · 25/05/2026
Dumb and dumber 3
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Pierre-Louis Vézina @plvezina.bsky.social · 20/05/2026
When people ask me if we like living in London, I say yeah, we love that city, but it's been tough to live its decline... London’s economy loses its lustre - giftarticle.ft.com/giftarticle/... via @FT
giftarticle.ft.com
London’s economy loses its lustre
The city has been hit by successive shocks and diminishing growth. But the rest of the UK needs it
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Zeke Hernandez @profzeke.bsky.social · 16/05/2026
*** NEW RESEARCH *** Images of ICE targeting US cities have been commonplace in since January 2025. What's the economic effect of this new immigration enforcement regime on businesses, both workplaces and retailers, in targeted areas? Thread... 🧵
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Mollie Goodfellow @hansmollman.bsky.social · 14/05/2026
Wes Streeting has resigned to take the job he was born to do…regional sales manager for Moss Bros
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Chloe N East (she/her) @chloeneast.bsky.social · 12/05/2026
Ooooooo I'm making the Department of Homeland Security mad with my new research y'all Check out @planetmoney.bsky.social's coverage of my research on the labor market effects of ICE in Trump 2.0 and DHS' response here: www.npr.org/sections/pla...
npr.org
The economic chilling effect of Trump's immigration crackdown
New research finds that ICE raids and deportation fears disrupted local economies, reduced work among undocumented immigrants, and may have hurt some U.S.-born workers too.
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King's QPE @kingsqpe.bsky.social · 11/05/2026
This Wednesday we are very happy to be hosting Sascha Becker (@essobecker.bsky.social) on "From the Death of God to the Rise of Hitler". Feel free to contact us (see details at sites.google.com/view/kingsqp...) if you're interested in attending.
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DIAL @dialdevelopment.bsky.social · 05/05/2026
Séminaire DIAL jeudi 7 mai de 12h30 à 13h45 @univdauphine.bsky.social. Pierre-Louis Vézina @plvezina.bsky.social (@kingscollegelondon.bsky.social) : " #Refugees and #Entrepreneurship: Evidence from #Ukrainians in #Poland" (Joint with C.G. Aksoy and P. Lewandowski). dial.ird.fr/evenements/r...
dial.ird.fr
Refugees and entrepreneurship: Evidence from Ukrainians in Poland – Pierre-Louis Vézina (King’s College London) – DIAL
Abstract :
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OlhaZadorozhna @olhazadorozhna.bsky.social · 04/05/2026
🎙️ New episode of Policy Implications. I spoke with @dariia.bsky.social about her new paper on UA migration to PL and what it tells us about migration and voting. The findings challenge the simple idea that more migration automatically boosts the far right. Listen here: tinyurl.com/52ar3c7k
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Pierre-Louis Vézina @plvezina.bsky.social · 01/05/2026
Camden, Hackney, Stratford
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OlhaZadorozhna @olhazadorozhna.bsky.social · 20/04/2026
1/ Migration between UA and PL is often framed as a story of crisis, pressure, and displacement. But it is also a story about skills, talent, and long-term economic strategy. In the new episode of Policy Implications, I spoke with Ivanna Kyliushyk about exactly that. Link: tinyurl.com/2zz84p5r
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Pierre-Louis Vézina @plvezina.bsky.social · 19/04/2026
As I walk through the valley of the shadow of death I take a look at my life and realise there's nothing left.
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Nina Obermeier @ninaobermeier.com · 02/04/2026
@kcl-spe.bsky.social is hosting a Junior International Political Economy Researchers Workshop on 28 April and we have a great line-up of papers by early-career researchers. @adreher.bsky.social will also share expertise on publishing in the field. Register here: forms.office.com/e/q7rUFAVg21
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Pierre-Louis Vézina @plvezina.bsky.social · 31/03/2026
#GrandCorruption , the grandest...
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Pierre-Louis Vézina @plvezina.bsky.social · 24/03/2026
Looking forward to this online seminar on 9 April 👇👇👇
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Pierre-Louis Vézina @plvezina.bsky.social · 21/03/2026
For those who don't speak "British", this means HMRC is 100% gonna be lenient.
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Pierre-Louis Vézina @plvezina.bsky.social · 12/03/2026
#RefugeeAllStars
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Jonathan Portes @jdportes.bsky.social · 05/03/2026
My new @iza.org/LISER paper Control Without Credibility: Immigration to the UK Since the Brexit Referendum docs.iza.org/dp18419.pdf
Immigration was central both to the 2016 Brexit referendum campaign and to the political narratives that followed it. Yet the trajectory of migration to the UK since the referendum bears little resemblance to the expectations — or promises — articulated at the time. This paper provides an overview and interpretation of developments since 2016, focusing on three interrelated themes. First, it describes trends in migration flows and stocks, highlighting the sharp fall in EU migration, the compensating increase in non-EU migration, and the role of both policy and economic developments in driving these trends.  Second, it examines the economic and labour market impacts of these changes over 201625. Third, it analyses the post-Brexit policy framework and, in particular, the Labour government’s approach since 2024. The paper concludes by reflecting on the implications for future UK migration policy and for the wider political economy of Brexit.
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Pierre-Louis Vézina @plvezina.bsky.social · 05/03/2026
#GrandCorruption in the US
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Santiago Sanchez-Pages @sanpages.eurosky.social · 04/03/2026
One of my favourite events in the conference season: young scholars sharing their superexciting research with us. Please, do apply and visit us at @kingsqpe.bsky.social
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Teresa Esteban-Casanelles @teresaestebanc.bsky.social · 04/03/2026
Just a week left to apply!
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Julia Seither @juliaseither.bsky.social · 26/02/2026
Thrilled to share our new paper! A simple info app improved immigrant integration in Portugal AND transmitted democratic norms to Cape Verde with political spillovers strongest in areas with lower far-right support. With the amazing @catiabatista.bsky.social, #LaraBohnet & @gazeaud.bsky.social
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