I consider changes in labor markets across U.S. states and counties around the enactment of the Affordable Care Act in 2010 and its implementation in 2014. I find that counties with large fractions of uninsured (and therefore a large exposure to the ACA) before the enactment or the...

As COVID-19 has spread across the globe, several observers noticed that countries still administering an old vaccine against tuberculosis-the BCG vaccine-have had fewer COVID-19 cases and deaths per capita in the early stages of the outbreak. This paper uses a geographic regression discontinuity...

Did Medicaid expansion under the Affordable Care Act affect the course of the COVID-19 pandemic? We answer this question using a regression discontinuity design for counties near the borders of states that expanded Medicaid with states that did not. Relevant covariates change continuously across...

Several studies have shown that, ex-post, the issuance of Treasury Inflation-Protected Securities (TIPS) has cost U.S. taxpayers money. We propose that evaluations of the TIPS program be more comprehensive and focus on the ex-ante costs of TIPS issuance versus nominal Treasury issuance and,...

We study bank supervision by combining a theoretical model that distinguishes supervision from regulation and a novel dataset on work hours of Federal Reserve supervisors. We highlight the trade-offs between the benefits and costs of supervision and use the model to interpret the relationship...

How strong are strategic complementarities in price setting across firms? In this paper, we provide a direct empirical estimate of firms' price responses to changes in prices of their competitors. We develop a general framework and an empirical identification strategy to estimate the...

Banks have progressively evolved from being standalone institutions to being subsidiaries of increasingly complex financial conglomerates. We conjecture and provide evidence that the organizational complexity of the family of a bank is a fundamental driver of the business model of the bank...

We explore the term structures of claims to a variety of cash flows: U.S. government bonds (claims to dollars), foreign government bonds (claims to foreign currency), inflation-adjusted bonds (claims to the price index), and equity (claims to future equity indexes or dividends). Average term...

Surprisingly little is known about the importance of mortgage payment size for default, as efforts to measure the treatment effect of rate increases or loan modifi cations are confounded by borrower selection. We study a sample of hybrid adjustable-rate mortgages that have experienced large rate...