Final answer:
A national policy measure involving immigration is the prioritization of high-skilled immigrants as suggested by the Congressional Jordan Commission. This policy aims to protect low-skilled workers' wages and enhance government revenue through increased taxation of high-skilled workers. The H1B visa program exemplifies the employment of foreign skilled workers in the U.S.
Step-by-step explanation:
A national policy measure involving immigration is the refocusing of U.S. immigration policy to prioritize high-skilled immigrants, as proposed by the Congressional Jordan Commission in the 1990s. This policy is designed to minimize negative impacts on low-skilled workers' wages and to bolster government budgets through increased tax revenues from higher paid, high-skilled jobs. A real-world application of this policy is found in the H1B visa program, which allows U.S. companies, especially in the tech sector, to employ foreign workers in specialty occupations.
Furthermore, national discussions on immigration reforms include pathways to citizenship for undocumented immigrants, such as provisions mentioned in the proposed "DREAM Act" and surveys showing popular support for legalization processes for immigrants who meet certain requirements. Meanwhile, immigration policies of countries like Canada and Australia serve as comparisons, emphasizing skilled migration as an efficient immigration strategy. These policies are constantly debated and shaped by societal needs, economic considerations, and ethical standards regarding the treatment of immigrants.