H-2A and H-2B Temporary Worker Visas: Policy and Related Issues [Updated June 9, 2020] [open pdf - 1MB]
From the Summary: "Certain foreign workers, sometimes referred to as guest workers, may be admitted to the United States to perform temporary labor under two temporary worker visas: the H-2A visa for agricultural workers and the H-2B visa for nonagricultural workers. The H-2A visa is not subject to any numerical limitations, while the H-2B visa is subject to a statutory annual cap of 66,000. H-2A and H-2B workers fill jobs that do not require much formal education. H-2A workers perform seasonal or temporary agricultural labor. They also engage in range herding and livestock production. H-2B workers perform temporary jobs in a variety of fields including landscaping, meat and seafood processing, and construction. The H-2A and H-2B programs are administered by the Department of Homeland Security (DHS) and the Department of Labor (DOL). These agencies and the Department of State (DOS) have made adjustments, and in the case of DHS issued H-2A and H-2B temporary final rules, related to guest worker visas in response to the coronavirus pandemic."
CRS Report for Congress, R44849
Congressional Research Service: https://crsreports.congress.gov/