Michael Clemens @mclem.org · 29/09/2026In my paper I analyze scenarios in which the tax is charged to universities, students, or employers. It is expected that the OPT tax proposal announced later this week will be charged to universities. How many might pay? I offer the first estimates. 030
Michael Clemens @mclem.org · 29/09/2026The US Administration will announce later this week its new $100,000 tax on international students who stay to work ('Optional Practical Training') This is not the H-1B visa tax. It's separate and additional. I analyze some likely effects of the new OPT tax here—> www.iza.org/publications...iza.orgTaxes on International Students: Demand and Supply Response for Post-Graduation Foreign Workers on Optional Practical TrainingThe US government has proposed various taxes on high-skill immigration. The effects of such taxes hinge on price elasticities of demand and supply tha... 22410
Michael Clemens @mclem.org · 29/09/2026"The Long-Term Effects of Cash Assistance" by David J. Price and Jae Song Just out in @aeajournals.bsky.social —> doi.org/10.1257/app.... 0144
Michael Clemens @mclem.org · 29/09/2026"How to Build a Policy School" Santi Ruiz of @ifp.bsky.social interviews our powerhouse dean, a nice summary of what we're building here at @jhu.edu —> www.statecraft.pub/p/how-to-bui... 050
Michael Clemens @mclem.org · 28/09/2026That paper is careful and thoughtful. But one of several issues is how the account for the effects of networks (which ~double the gain to +18%). They estimate those network effects from the current, closed world. The network effects in a more open world could be much larger. 110
Reposted by Michael ClemensIZA@LISER @iza.org · 28/09/2026🌍 Restricting international #STEM students would cost the U.S. economy billions 🆕IZA Discussion Paper by @mclem.org, J. Neufeld & A. Nice examines what would happen if policy changes restricted the # of intl. STEM graduates transitioning into the U.S. workforce. 🔗 www.iza.org/publications... 1/2 162
Michael Clemens @mclem.org · 28/09/2026Corruption of our American institutions harms all of us. In a million ways that we cannot ever fight as individuals, or even trace to their cause. It harms every Conservative and every Liberal American. Condoning or even encouraging corruption does not help anyone’s “side“. 0226
Michael Clemens @mclem.org · 28/09/2026Our nonpartisan statistical agencies are not just pillars of our public service, but of democracy itself, because the facts they produce are necessary for citizens to hold their government accountable. This atrocity at our Census Bureau must be understood as a trial balloon. 0176
Michael Clemens @mclem.org · 27/09/2026Yes! I’d highlight two IMF studies finding a substantial positive effect of immigration on GDP per capita primarily due to a positive effect on productivity: Summaries here cepr.org/voxeu/column... and www.imf.org/en/blogs/art...cepr.orgImmigration and economic prosperityRapidly ageing populations, the refugee crisis, and growing anti-immigration rhetoric have brought immigration issues to the forefront recently. Using a panel of 18 countries, this column explores the... 110
Reposted by Michael ClemensNational Foundation for American Policy @nfapresearch.bsky.social · 25/09/2026If the Trump admin $103,265 H-1B fee rule stands, DHS could, in theory, set application fees of $10 million in every immigration category and block all immigrants & temporary visa holders, nullifying U.S. laws on legal immigration. @mclem.org @douglasrivlin.bsky.social www.forbes.com/sites/stuart...forbes.comDHS Overestimated Revenue In H-1B Fee Immigration Rule By $6.1 BillionA new analysis finds DHS overestimated by $6.1 billion the annual revenue it would receive by imposing a $103,265 fee on H-1B petitions. 0137
Michael Clemens @mclem.org · 25/09/2026This statement by a top US official is false: many have a legal status. It is also deceptive: many others lack legal status only because his own Administration removed it. But setting facts aside, this is a deeply shocking statement from a person responsible for decisions with life/death effects. 0256
Michael Clemens @mclem.org · 25/09/2026Our American elections are free and secure. The smear campaign against them is an attempt to acquire powers to subvert them. 012838
Reposted by Michael ClemensMatt Ford @mford.bsky.social · 24/09/2026Ezra Klein asked Nvidia CEO Jensen Huang about AI making kids worse at math and reading. Huang’s reply: “Does it matter?” Then he said he doesn’t know his own address or phone number. “We’re going to lose some fine intellectual dexterity.” www.nytimes.com/2026/09/23/o... 58854721498
Reposted by Michael ClemensDr Abeba Birhane @abeba.blacksky.app · 24/09/2026over the past few weeks several AI evaluation/cybersecurity experts have explained how what's happening is a result of human incompetence rather than "AI going rogue". I'm begging the media to show a shred of journalistic integrity and stop parroting what altman or amodei say 6437361468
Reposted by Michael ClemensTressie McMillan Cottom @tressiemcphd.bsky.social · 24/09/2026Most people have no idea how much international students are the lifeblood of higher education. But they’re about to learn. Sigh. 322234585
Reposted by Michael ClemensAaron Sojourner @aaronsojourner.org · 19/09/2026Obsessive focus on the state of your subordinates' genitals is the hallmark of something, and that something is neither effective leadership nor military success. 1022648
Michael Clemens @mclem.org · 23/09/2026A free press is a central pillar of democracy, as the Framers profoundly understood. This highlights the nature and effects of current attacks on our free press. 27123
Michael Clemens @mclem.org · 23/09/2026P.S. When photographed, this machine—located in the US Treasury—was broken. 0140
Michael Clemens @mclem.org · 23/09/2026The United States faces enormous productivity losses from its current policy of international student exclusion. These arise from the consequent loss of STEM workers and the innovation they catalyze. Thank you @iza.org for this nice summary of our research —> www.iza.org/en/news/brai... 0216
Michael Clemens @mclem.org · 23/09/2026‘How far back in time can you understand English?’ HT @jobium.bsky.socialdeadlanguagesociety.comHow far back in time can you understand English?An experiment in language change 0227
Michael Clemens @mclem.org · 23/09/2026This coin is illegal. The laws of our Congress specifically ban coinage depicting a living president (31 U.S. Code § 5112). What better metaphor could there be for the numb shattering of our constitutional order, than a $1 coin being sold to the American people for $10? 520666
Michael Clemens @mclem.org · 23/09/2026This piece by my brilliant @piie.com colleage @adamposen.bsky.social may be the first time you have seen the United States described accurately as what its ruling regime has quickly made it: a "lesser power".foreignaffairs.comChina Still Has What America NeedsThe Trump-Xi summit gives Washington a chance to buy time. 0157
Reposted by Michael ClemensDavid McKenzie @dmckenzie.bsky.social · 22/09/2026Recently out in World Development, my paper on where & how the World Bank spends and lends money on international migration (www.sciencedirect.com/science/arti...). Today's blog summarizes some takeaways, & asks also where you can spend your charity dollars (blogs.worldbank.org/en/impacteva...)sciencedirect.com 074
Michael Clemens @mclem.org · 22/09/2026Is there a program online? Sorry to take your time with that, but I looked and could not find one 100
Reposted by Michael ClemensAaron Sojourner @aaronsojourner.org · 07/09/2026Registration is open, free, limited, & required. Great set of research presentations lined up on education, health, economy, mutual aid & more. Learn about the frontier evidence and connect with those working to generate it. docs.google.com/forms/d/e/1F... 218883
Michael Clemens @mclem.org · 22/09/2026As a US citizen, I protest this filthy, bloodthirsty policy statement in the strongest possible terms.  America’s vast influence abroad and at home has depended on our country meaning something other than slobbering brutality. Shattering that harms all Americans, Conservative and Liberal. 06312
Reposted by Michael ClemensBrendan Nyhan @brendannyhan.bsky.social · 22/09/2026"Republican who oversees South Dakota’s elections endorses a Democrat in the race to succeed her" apnews.com/article/sout... 341380
Reposted by Michael ClemensCarl Quintanilla @carlquintanilla.bsky.social · 22/09/2026FUKUYAMA: “.. Accelerationists tend to be very intelligent people, but that intelligence tends to be narrowly mathematical. We know how to do many things like produce electricity or clean water .. the problem is a failure of implementation.” www.persuasion.community/p/why-i-chan... 1319842
Michael Clemens @mclem.org · 22/09/2026“Americans must urgently rescue their democratic experiment. Their ability to do so is critical to reversing the illiberal tide that is rising globally. Only if Americans get their own democratic house in order…will they be able to ensure the arc of history again bends toward more freedom.”nytimes.comOpinion | The End of American Exceptionalism? (Gift Article)Liberal democracy is in worldwide retreat, including in its birthplace — the United States. 095
Michael Clemens @mclem.org · 20/09/2026The US President is claiming, and this is real, that the military is demanding he build a massive monument to himself across the river from Washington because they have nowhere else to store ammunition or deploy drones. The site, which I pass often, is just down the road from THE PENTAGON. 0367
Michael Clemens @mclem.org · 19/09/2026This miracle is the fruit of generations of enormous and bipartisan investments of public research support for our universities. Future versions of this miracle are what we are currently losing, due to the US Administration’s decision to shatter the public’s partnership with our universities.  018789
Michael Clemens @mclem.org · 19/09/2026The US President has proclaimed a new $100,000 tax on H-1B visa workers —> www.whitehouse.gov/presidential... He is renewing a $100K tax he proclaimed last year, *which was ruled illegal* in federal court —> www.fragomen.com/insights/uni...whitehouse.govRestriction on Entry of Certain Nonimmigrant WorkersBY THE PRESIDENT OF THE UNITED STATES OF AMERICA A PROCLAMATION On September 19, 2025, Proclamation 10973 (Restriction on Entry of Certain Nonimmigrant Every child deserves a safe and nurturing home w... 0217
Reposted by Michael ClemensGreg Folkers @gregfolkers.bsky.social · 19/09/2026NEJM: The End of the War on Biomedical Science? by David Blumenthal and James A. Morone @davidblumenthal.bsky.social @nejm.org depending on continued activism, perhaps room for optumism bit.ly/4yNxiWZ 💥 075
Michael Clemens @mclem.org · 19/09/2026Great to see @soumayakeynes.ft.com and @chadpbown.com ‘s brilliant and timely book in the wild 📚 2173
Reposted by Michael ClemensAlex Wild @alexwild.bsky.social · 10/09/2026Ultimately, this letter from NSF is an announcement that universities will be funded a lot less and politically-connected industry will be funded a lot more. Fancy words around old-fashioned corruption.nsf.govNSF leadership in a new golden age of scienceThe U.S. National Science Foundation was established in 1950 to keep American discovery at the frontier. That mission has not changed. The science and technology ecosystem around it has... 7319169
Michael Clemens @mclem.org · 19/09/2026This humiliation of our military service members is beyond words. 014054
Michael Clemens @mclem.org · 18/09/2026It is illegal for the US President to tear down our beloved Kennedy Center for the Performing Arts, a national treasure created by our Congress, under law. It is sick and poisonous for any Liberal or Conservative US President to openly conspire to spit on the laws he swore to uphold.nytimes.comTrump Air Force One Photos Fuel Kennedy Center Demolition SpeculationImages captured through the windows of Air Force One showed President Trump reviewing a poster with the title “Kennedy Center DEMOLISHED.” 0113
Michael Clemens @mclem.org · 18/09/2026This is illegal. The president is not the CEO of the country nor the owner of the White House, a great institution owned by the American public. Punishing media for dissent excretes on American values and our Constitution. It sullies all of us, every Conservative and every Liberal. 03112
Reposted by Michael ClemensStand Up for Science! @standupforscience.net · 18/09/2026We scraped through the data and found that 50% of all clinical trials are at risk of being cancelled. 1,026 cancer trials 273 pediatric trials 115 heart disease trials 184 diabetes trials This is unacceptable and inhumane. 415688
Reposted by Michael ClemensProfessa Murray @kalimurray.bsky.social · 18/09/2026The funny thing before the birthright citizenship debate I had an encountered Ilan as an originalist administrative law scholar and it sounds like the most useful part of this book is grounded in that work. Legal history is a different game, though, and he made some serious errors in method. 45413
Reposted by Michael ClemensDavid Dayen @ddayen.bsky.social · 18/09/2026Once upon a time, Congress had its own in-house think tank that would research and suggest remedies for technical problems politicians might not have a handle on. Might be a good resource now, ay? Here's @maxmoranhi.bsky.social on the long-lost Office of Technology Assessment:prospect.orgWhat Congress Actually Needs to Do About AI: Staff Up - The American ProspectIn 1995, Newt Gingrich lobotomized Congress’s technical brain trust. It should be rebuilt. 517774
Michael Clemens @mclem.org · 18/09/2026Versión en castellano—>elpais.comLa crisis migratoria de Ceuta: cuando el verdadero efecto llamada es la escasez de mano de obra en EuropaLa situación de la ciudad autónoma muestra las carencias de 35 años de legislación basada solo en reforzar restricciones y barreras. Se atacan los síntomas, pero no las causas, y se olvida que el mayo... 052
Michael Clemens @mclem.org · 18/09/2026"Spain's self-inflicted migration crisis" by the brilliant and trenchant Hein de Haas A concise and exposition of why border crises, a product of policy, happen and will continue to happen —>heindehaas.substack.comSpain’s self-inflicted migration crisisWhat really drives migration from Morocco 1137
Michael Clemens @mclem.org · 18/09/2026The US Congress has the power of the purse under our Constitution. Expenditures mandated by law are not up to the whims of the Executive branch, which has no such power. That is our money. Mandated by our laws. Shattering our Constitution harms all Conservative & Liberal Americans.apnews.comTrump administration has cut or frozen $177 billion in grants across every state, analysis showsAn analysis finds that the Trump administration has cut or frozen up to $177 billion in federal grants since the president took office for his second term. 06633
Michael Clemens @mclem.org · 18/09/2026Handing over our public health system to incompetent quacks will kill Americans. It will kill Conservative Americans and Liberal Americans. 0243