Use the information to answer the question that follows. Immigrants are a critical part of the U.S workforce and contribute to productivity growth and technological advancement. They make up 15% of all workers and even larger shares of certain occupations such as construction, food services and health care.Approximately 40% of Ph.D. scientists working in the United States were born abroad. - "Immigration's Economic Impact: June 20, 2007 Council of Economic Advisors, The White House Based on the text what is one reason that immigration policy is Important in the United States? Almmigrants make up a majority of graduate students, and colleges rely on their tuition for funding. Immigrants are unable to take advantage of education programs therefore they have to work primarily in low-paying jobs like food service. Immigrants make up a large portion of the U.S. workforce, and a failure to properly address Immigration could affect the economy. Immigrants are not a large portion of the U.S. workforce, therefore it is important to limit the amount of immigrants allowed in the country.