Chain migration is the social process by which immigrants from a particular area follow others from that area to a particular destination. The destination may be in another country or in a new location within the same country. John S. MacDonald and Leatrice D. MacDonald define chain migration as "movement in which prospective migrants learn of opportunities, are provided with transportation, and have initial accommodation and employment arranged by means of primary social relationships with previous migrants". Dara Lind of Vox describes it as a process in which "[p]eople are more likely to move to where people they know live, and each new immigrant makes people know more likely to move there in turn." During the debate on immigration policy following Donald Trump's rescission of the Deferred Action for Childhood Arrivals program, the use of the term "chain migration" became contentious. Ethnic enclaves The information and personal connections that lead to chain migration lead to transplanted communities from one nation to another. Throughout the history of the Americas, ethnic enclaves have been built and sustained by immigration. Different ethnic groups claimed distinct physical space in city neighborhoods to provide a reception for chain migration and maintain the community network it created. Examples of this trend include the many neighborhoods called Kleindeutschland, Little Italy, and Chinatown throughout the United States. The same was true of rural areas in the eighteenth and early nineteenth century. Some rural towns in the Midwestern United States and in southern Brazil were founded by immigrants and directly advertised in home countries. (Prominent examples include New Glarus, Wisconsin in the United States and Blumenau, Santa Catarina in Brazil.) This case was especially true for many agricultural German immigrants of the nineteenth century. Certain towns were built on a homogeneous group from a particular German principality. Additionally, many of these towns exclusively spoke German until the mid-1900s in the United States and the late 1900s in Brazil. These enclaves and their contemporaries represent the close relationship between family, community, and immigration. In the late nineteenth century, distinct Italian provinces and towns immigrated to the United States and Argentina via chain migration. Regional ties in Italy initially divided Italian ethnic identity in cities like New York and Buenos Aires, and certain enclaves included only Southern Italians or immigrants from Naples. The community ties remained strong with first generation immigrants concerning social life. These communities were originally composed of only