United States, it has been demonstrated that the primary source of information about immigration preference categories, passports and visas is neither the United States embassy, nor newspapers and travel agents, but personal contacts with relatives and acquaintances already in the United States (Stalker 2007). Mexican villages are often linked with specific United States farms through informal networks. Initial migrants may arrange with their employers for friends and families to arrive at the same workplace, taking responsibility for the new employees (ibid.). Migration networks are moulded by local histories of migration, national conditions and sociocultural and gender prerequisites. For example, it has been found that skilled migrants rely more on networks of colleagues or organizations and less.
