Public Use Data on Mexican Immigration

描述(由申请人提供)：本提案要求延长墨西哥移民项目的核心资金，该项目的目的是提供及时、可靠、高质量的关于从墨西哥到美国的有证件和无证件移民的数据。MM满足了对墨西哥移民持续数据的需求，而其他潜在来源无法满足这一需求。在过去的15年里，MMP向许多联邦机构和学术研究人员提供了关键数据，以研究墨西哥-美国移民的过程，项目调查人员本身也为研究文献做出了重大贡献。所要求的资金将用于维护和改进作为传播数据的主要手段的媒体网站，并将使收集新的社区样本扩大数据库成为可能。抽样将集中在墨西哥中部地区，该地区在过去十年中已成为美国移民的主要新来源。研究将试图通过具体说明不同理论发挥作用的情况，加深对国际移徙的理论理解。

DESCRIPTION (provided by applicant): This proposal requests renewal of core funding for the Mexican Migration Project (MMP), whose purpose is to provide timely, reliable, high-quality data on documented and undocumented migrants from Mexico to the United States. The MMP fulfills a need for ongoing data on Mexican immigration that other potential sources are unable to meet. Over the past 15 years, the MMP has provided crucial data to numerous federal agencies and academic researchers to study the process of Mexico-U.S. migration, and project investigators have themselves made significant contributions to the research literature. Requested funds will go toward maintaining and improving the MMP website as the principal means of data dissemination and will enable the gathering new community samples for expansion of the data base. Sampling will focus on Mexico's central region, which in the past decade has emerged as a major new source for migrants to the United States. Research will attempt to deepen theoretical understanding of international migration by specifying the circumstances under which different theories come into play.