"The United States Code is the official codification of the general and permanent laws of the United States of America. The Code was first published in 1926, and a new edition of the code has been published every six years since 1934. The 2012 edition of the Code incorporates laws enacted through the One Hundred Twelfth Congress, Second Session, the last of which was signed by the President on January 15, 2013. It does not include laws of the One Hundred Thirteenth Congress, First Session, enacted between January 2, 2013, the date it convened, and January 15, 2013. By statutory authority this edition may be cited "U.S.C. 2012 ed." As adopted in 1926, the Code established prima facie the general and permanent laws of the United States. The underlying statutes reprinted in the Code remained in effect and controlled over the Code in case of any discrepancy. In 1947, Congress began enacting individual titles of the Code into positive law. When a title is enacted into positive law, the underlying statutes are repealed and the title then becomes legal evidence of the law. Currently, 26 of the 51 titles in the Code have been so enacted. These are identified in the table of titles near the beginning of each volume. The Law Revision Counsel of the House of Representatives continues to prepare legislation pursuant to 2 U.S.C. 285b to enact the remainder of the Code, on a title-by-title basis, into positive law. The 2012 edition of the Code was prepared and published under the supervision of Ralph V. Seep, Law Revision Counsel. Grateful acknowledgment is made of the contributions by all who helped in this work, particularly the staffs of the Office of the Law Revision Counsel and the Government Printing Office"--Preface.

The Valley of South Texas is a region of puzzling contradictions. Despite a booming economy fueled by free trade and rapid population growth, the Valley typically experiences high unemployment and low per capita income. The region has the highest rate of drug seizures in the United States, yet its violent crime rate is well below national and state averages. The Valley's colonias are home to the poorest residents in the nation, but their rates of home ownership and intact two-parent families are among the highest in the country for low-income residential areas. What explains these apparently irreconcilable facts? Since 1982, faculty and students associated with the Borderlife Research Project at the University of Texas-Pan American have interviewed thousands of Valley residents to investigate and describe the cultural and social life along the South Texas-Northern Mexico border. In this book, Borderlife researchers clarify why Valley culture presents so many apparent contradictions as they delve into issues that are "on the edge of the law"—traditional health care and other cultural beliefs and practices, displaced and undocumented workers, immigration enforcement, drug smuggling, property crime, criminal justice, and school dropout rates. The researchers' findings make it plain that while these issues present major challenges for the governments of the United States and Mexico, their effects and contradictions are especially acute on the border, where residents must daily negotiate between two very different economies; health care, school, and criminal justice systems; and worldviews.