Immigration of Temporary Lower-Skilled Workers: Current Policy and Related Issues [Updated December 13, 2012] [open pdf - 1MB]
From the Document: "This report discusses existing visa programs for temporary lower-skilled workers, including regulatory changes since 2008. It covers legislative efforts to reform current programs and to create new guest worker visas. It further identifies and explores key policy considerations to help inform congressional action on guest worker programs."
CRS Report for Congress, R42434
Congressional Research Service: https://crsreports.congress.gov/