Improving diet quality has been a major target of public health policy. Governments have encouraged consumers to make healthier food choices and firms to reformulate food products. Evaluation of such policies has focused on the impact on consumer behaviour; firm behaviour has been less well...

The United States government recently passed legislation and stabilization packages to respond to the COVID-19 (i.e., coronavirus disease 2019) outbreak by providing paid sick leave, tax credits, and free virus testing; expanding food assistance and unemployment benefits; and increasing Medicaid...