Over the last few decades, health care services in the United States have become more centralized. We study how the loss of hospital-based obstetric units in over 400 rural counties affect maternal and infant health via a difference-in-differences design. We find that closures lead to...

The COVID-19 related public health emergency led to federal legislation that changed the landscape of Medicaid coverage for low-income people in the United States. Beginning in 2020, policy responses led to a surge in Medicaid enrollment due to federal rules preventing Medicaid disenrollment,...