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A radical macroeconomic experiment is under way at exactly the moment the US external position is showing signs of real stress.Gilles Moëc, Chief Economist at AXA, has written a chapter in the fourth Paris Report, published jointly by CEPR and Bruegel, on stablecoins: what they are, why the US government is so keen to promote them, and what risks they carry. His argument is that stablecoins are a fast-growing digital asset backed almost entirely by short-dated US government debt. When investors buy a dollar stablecoin, they are effectively buying into a US T-bill at zero interest; the platform keeps the yield. The US government likes this because it draws global savings into dollar assets at minimal cost, extending the dollar's reach and helping fund the deficit. But the regulatory framework has a three-year grace period and leaves supervision partly to the states, which compete to attract platforms. And there’s the historical parallel: find out how the National Banking Acts of 1863 and 1864 give us an insight into the attraction, and risks, of using stablecoins in this way.The report discussed in this series of episodes:Rey, Hélène, Beatrice Weder di Mauro, and Jeromin Zettelmeyer (eds). 2026. The New Global Imbalances. Paris Report 4. CEPR Press and Bruegel. Free to download at <a href="http://cepr.org">cepr.org</a>.The chapter discussed in this episode:Moëc, Gilles. 2026. "Stablecoins and global imbalances: Attempting to preserve the US exorbitant privilege." In Rey, Weder di Mauro, and Zettelmeyer (eds), The New Global Imbalances. Paris Report 4. CEPR Press and Bruegel. Chapter 9, p. 210.To cite this episode:Phillips, Tim, and Gilles Moëc. 2026. "Stablecoins and Global Imbalances." VoxTalks Economics (podcast). Assign this as extra listening. The citation above is formatted and ready for a reading list or VLE.About Paris Report 4The fourth Paris Report, The New Global Imbalances, is a joint publication of CEPR and Bruegel. It was edited by Hélène Rey (London Business School and CEPR), Beatrice Weder di Mauro (Geneva Graduate Institute and CEPR, and President of CEPR), and Jeromin Zettelmeyer (Bruegel and CEPR). The report examines how, in a high-debt and fragmented world, excess savings, rising surpluses, and rising deficits pose a risk to stability and undermine the global trading system. It is free to download at <a href="http://cepr.org">cepr.org</a>.About the guest<a href="https://www.axa.com/en/about-us/profile/gilles-moec">Gilles Moëc</a> is Chief Economist at AXA and Head of AXA Research. He previously held senior roles at in the French civil service, Banque de France, and Bank of America Merrill Lynch. His research covers macroeconomics, monetary policy, and the European economy.Research cited in this episodeStablecoins are privately issued digital tokens whose value is pegged to an existing fiat currency, typically the dollar, and backed by safe and liquid assets, typically short-dated US Treasury bills. Unlike most cryptocurrencies, they are designed to maintain a stable exchange rate with the pegged currency. Platforms issue the tokens and invest the cash received in T-bills, keeping the interest for themselves; holders receive no yield. Stablecoin platforms may have absorbed roughly twenty to twenty-five percent of net US T-bill issuance.The GENIUS Act (Guiding and Establishing National Innovation for US Stablecoins) is the US federal legislation organising the stablecoin market. It requires platforms to hold back-to-back liquid assets as reserves and establishes common minimum standards across states. Regulatory competition across states means platforms can seek the most permissive jurisdiction. European regulation, MiCA, is more detailed and already in force but has not yet generated European platforms.Exorbitant privilege describes the advantage the US gains from issuing the world's dominant reserve currency. For decades, foreigners were content to hold low-yielding dollar assets while Americans invested in higher-returning foreign assets; the result was a positive US income balance despite a large trade deficit. In 2024, for the first time in modern records, the income balance turned negative: the US was paying more on its foreign liabilities than it was earning on its foreign assets. The National Banking Acts of 1863 and 1864 created a system of private national banks that issued dollar banknotes backed by US government bonds. The structure is the closest historical parallel to today's stablecoin framework: private platforms issuing dollar-denominated tokens backed by government debt. The system required over-collateralisation (one hundred and ten dollars of bonds for every one hundred dollars of notes) and included a Treasury backstop. Milton Friedman, in his Monetary History of the United States, identified the key flaw: money supply became tied to the quantity of public debt rather than the needs of the economy. The system was replaced by the Federal Reserve in 1913.De-dollarisation refers to the trend in some countries toward conducting trade and holding reserves in currencies other than the dollar. Moëc notes examples such as Iranian demands for non-dollar payments for passage through the Strait of Hormuz. Stablecoins work against this trend by making dollar access easier and cheaper for people in developing countries with weak or distrusted domestic financial systems; rather than buying dollars directly, they can buy a dollar-pegged token through a digital platform. More VoxTalks Economics episodesThis episode is the second of two published simultaneously to mark the launch of Paris Report 4. In the first episode, Maurice Obstfeld of the Peterson Institute for International Economics examines the history of global imbalances and what today's policymakers can learn from previous episodes. For an interview with two of the report's editors, Beatrice Weder di Mauro and Jeromin Zettelmeyer, on the problem of global imbalances, listen to The Sound of Economics, Bruegel's podcast. Available at <a href="http://bruegel.org">bruegel.org</a>.</div>

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