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Source: Raising the Floor for American Workers: The Economic Benefits of Comprehensive Immigration Reform Study that "... uses a computable general equilibrium model to estimate the economic ramifications of three different scenarios: 1) comprehensive immigration reform that creates a pathway to legal status for unauthorized immigrants in the United States and establishes flexible limits on permanent and temporary immigration that respond to changes in U.S. labor demand in the future; 2) a program for temporary workers only that does not include a pathway to permanent status or more flexible legal limits on permanent immigration in the future; and, 3) mass deportation to expel all unauthorized immigrants and effectively seal the U.S.-Mexico border. The model shows that comprehensive immigration reform produces the greatest economic benefits..." so that "Legalizing the nation’s unauthorized workers and putting new legal limits on immigration that rise and fall with U.S. labor demand would help lay the foundation for robust, just, and widespread economic growth."