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Working Paper
The Postpandemic U.S. Immigration Surge: New Facts and Inflationary Implications
The U.S. experienced an extraordinary postpandemic surge in unauthorized immigration. This paper combines administrative data on border encounters and immigration court records with household survey data to document two new facts about these immigrants: They tend to be hand-to-mouth consumers and low-skilled workers that complement the existing workforce. We build these features into a model with capital, household heterogeneity and population growth to study the inflationary effects of this episode. Contrary to the popular view, we find little effect on inflation, as the increase in supply ...
Working Paper
Dynamic Identification Using System Projections and Instrumental Variables
We propose System Projections on Instrumental Variables (SP-IV) to estimate dynamic structural relationships using impulse responses obtained from local projections or vector autoregressions. SP-IV replaces lag sequences of instruments in traditional IV with lead sequences of endogenous variables. By allowing the inclusion of lagged variables as controls, SP-IV weakens exogeneity requirements and can improve efficiency and effective instrument strength relative to 2SLS. We provide inference procedures under strong and weak identification, and show that SP-IV outperforms conventional IV ...
Working Paper
Dynamic Identification Using System Projections on Instrumental Variables
We propose System Projections on Instrumental Variables (SP-IV) to estimate structural relationships using regressions of structural impulse responses obtained from local projections or vector autoregressions. Relative to IV with distributed lags of shocks as instruments, SP-IV imposes weaker exogeneity requirements and can improve efficiency and increase effective instrument strength relative to the typical 2SLS estimator. We describe inference under strong and weak identification. The SP-IV estimator outperforms other estimators of Phillips Curve parameters in simulations. We estimate the ...
Oil and Gas Sector Increasingly Influences U.S. Business Fixed Investment
As U.S. oil production has more than doubled over the past decade, the oil and gas sector has become more important to growth in non-residential investment.
Working Paper
Work from Home and Interstate Migration
Interstate migration by working-age adults in the US declined substantially during the Great Recession and remained subdued through 2019. We document that interstate migration rose sharply following the 2020 Covid-19 outbreak, nearly recovering to pre-Great recession levels, and provide evidence that this reversal was primarily driven by the rise in work from home (WFH). Before the pandemic, interstate migration by WFH workers was consistently 50% higher than for commuters. Since the Covid-19 outbreak, this migration gap persisted while the WFH share tripled. Using quasi-panel data and ...
The Impact of Work from Home on Interstate Migration in the U.S.
An analysis of work patterns suggests that the rise in interstate migration since 2020 has largely been the result of an increased share of people working from home.
Working Paper
Distributional Considerations for Monetary Policy Strategy
We show that makeup strategies, such as average inflation targeting and price-level targeting, can be more effective than a flexible inflation targeting strategy in overcoming the obstacles created by the effective lower bound in a heterogeneous agent New Keynesian (HANK) model. We also show that the macroeconomic stabilization benefits from such alternative strategies can be substantially larger in a HANK environment than in a representative agent New Keynesian model. We argue that gains in employment outcomes from switching to an alternative strategy would generate disproportionate ...
Government-funded R&D produces long-term productivity gains
Our estimates indicate that government-funded R&D accounts for roughly one quarter of all business sector productivity growth since World War II, including one quarter of the deceleration in productivity growth since the late 1960s.
Working Paper
Work from Home Before and After the COVID-19 Outbreak
Based on novel survey data, we document the evolution of commuting behavior in the U.S. over the course of the COVID-19 pandemic. Work from home (WFH) increased sharply and persistently after the outbreak, and much more so among some workers than others. Using theory and evidence, we argue that the observed heterogeneity in WFH transitions is consistent with potentially more permanent changes to work arrangements in some occupations, and not just temporary substitution in response to greater health risks. Consistent with increased WFH adoption, many more – especially higher-educated – ...
Working Paper
Mobility and Engagement Following the SARS-Cov-2 Outbreak
We develop a Mobility and Engagement Index (MEI) based on a range of mobility metrics from Safegraph geolocation data, and validate the index with mobility data from Google and Unacast. We construct MEIs at the county, MSA, state and nationwide level, and link these measures to indicators of economic activity. According to our measures, the bulk of sheltering-in-place and social disengagement occurred during the week of March 15 and simultaneously across the U.S. At the national peak of the decline in mobility in early April, localities that engaged in a 10% larger decrease in mobility than ...