Despite restrictive quotas, American immigration has also valued an American model of family and kinship. This allows those with legal residency to automatically sponsor spouses and children; citizens can also sponsor parents and facilitate entry of unmarried siblings. As these bring in further kin, a “chain” results which may underpin business and social cohesion. This process has become especially associated with networks in post-1965 immigration, although critics have charged abuses based on false marriages, fictive connections and the use of children born in the US to legitimate illegal immigrants.