Alex Nowrasteh, the immigration policy analyst at the Cato Institute’s Center for Global Liberty and Prosperity, writes in this Policy Analysis that, "the three components of politically feasible immigration reform are legalization for some unauthorized immigrants, border and work-place enforcement to impede the entry and hiring of unauthorized immigrants, and increased numbers of guest workers and legal immigrants." It would be better to adopt a lightly regulated guest worker visa program. A guest worker visa program should efficiently link foreign workers with American employers and function with a minimum of government interference. Several factors should be taken into account, including market forces, security, criminal background, and health concerns. Those areas should determine which workers are offered visas.