This essay discusses the official immigration policy of the United States from the post-war period to the presidency of Barack Obama. It covers the changes in immigration policy from the Cold War to the present day. The essay explores the policies of Presidents Truman, Reagan, Bush, Clinton, and Obama, and how their policies impacted the country. The essay also discusses the Immigration Reform and Control Act of 1986 and the Comprehensive Immigration Reform Act of 2007. The subject of the essay is American History, and it is relevant to course code 7. The document type is an essay, and the type of assignment is not mentioned. The essay is not associated with any college or university.