Duncan Haystead graduated from the University of California, Berkeley with a B.A. in mathematics. He works on the microsim side of the PWBM model.
PWBM projects that exempting STEM immigrants from green card caps would raise U.S. output 4.0 percent and lower federal debt 5.5 percent by 2059, with low-education workers gaining most and incumbent foreign-born STEM workers persistently worse off.
We project that the new DHS H-1B selection rule, going into effect in March 2026, will shift the H-1B visa allocation toward higher-paid and higher-education foreign-born workers, but by less than alternative designs being debated. Based on data from the current random lottery in the last five years, we estimate that the new DHS rule will have no significant impact on wages of U.S.-born workers, including non-college, college-educated, and STEM workers. Any reduction in competition from fewer STEM H-1Bs is offset by a reduction in productivity growth.
The COVID-19 pandemic led to a decline in births in 2020 followed by a rebound in 2021. We present new estimates of “excess” births during the pandemic, which show that on net over the two-year period, births were roughly in line with pre-pandemic trends.
Improvements in U.S. life expectancy stalled in the 2010s, years before the COVID-19 pandemic produced a spike in mortality. We present new estimates of historical patterns in mortality by socio-demographic group and projections of U.S. mortality through 2060.
PWBM estimates that exempting from immigrants with advanced STEM degrees from numerical limitations on green cards would reduce deficits by $129 billion over the 2025-2034 period and by $634 billion over the 2035-2044 period.
