Amazon.com description: Product Description: These books provide a range of opinions on a social issue; each volume focuses on a specific issue and offers a variety of perspectives, e.g., eyewitness accounts, governmental views, scientific analysis, newspaper accounts, to illuminate the issue.; This title explores provides a wide range of opinions on whether or not the United States should close its Mexican and Canadian borders to immigrants. The impact and efficacy of increased border patrol and enforcement are debated.; Greenhaven Press's At Issue series provides a wide range of opinions on individual social issues. Enhancing critical thinking skills, each At Issue volume is an excellent research tool to help readers understand current social issues and prepare reports.