Chain Migration - Effects of Chain Migration in The United States in The 20th and 21st Centuries

Effects of Chain Migration in The United States in The 20th and 21st Centuries

In the United States, the term 'chain migration' is used to partially explain why legal immigration has quadrupled from levels during the 1960s. As such, 'chain migration' is held up as one of the causes of the United States' current immigrant population boom.

Family reunification allows U.S. citizens and immigrants (Lawful Permanent Resident or "Green card" holders) to petition for visas for their immediate relatives. Until the late 1950s, America's family reunification policies included only spouses and minor children of immigrants. However, since that time, family reunification policies of the United States have included the ability of immigrants to sponsor not only their minor children and spouses, but also their parents, siblings, and adult children.

According to the theory of 'chain migration' as applied to immigrants to the United States, subsequent immigrant Lawful Permanent Resident parents and adult children can, in turn, sponsor their other children, parents, etc., thus representing a chain of immigrants following the first family member into the country. In practice, however, the wait times from when the petition is filed until the adult relative is able to enter the U.S. can be as long as 15–20 years (as of 2006). This is a result of backlogs in obtaining a visa number and visa number quotas that only allow 226,000 family-based visas to be issued annually. There are four family-based preference levels:

First: Unmarried Sons and Daughters of Citizens: 23,400 plus any numbers not required for fourth preference.

Second: Spouses and Children, and Unmarried Sons and Daughters of Permanent Residents: 114,200, plus the number (if any) by which the worldwide family preference level exceeds 226,000, and any unused first preference numbers:
A. Spouses and Children: 77% of the overall second preference limitation, of which 75% are exempt from the per-country limit;
B. Unmarried Sons and Daughters (21 years of age or older): 23% of the overall second preference limitation.

Third: Married Sons and Daughters of Citizens: 23,400, plus any numbers not required by first and second preferences.

Fourth: Brothers and Sisters of Adult Citizens: 65,000, plus any numbers not required by first three preferences.

Backlogs in obtaining visa numbers range from four-and-a-half years (for preference level 2A) to 23-years (for preference level 4 immigrants from the Philippines).

While some backlogs have remained relatively steady for some time, since 1995, backlogs for other family-sponsored preferences have steadily increased (see image to the right).

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