There is much confusion as to how immigration law work and especially when it comes to the U.S. where it is more complex. The body of law governing current immigration policy, which is The Immigration and Naturalization Act (INA), provides for an annual worldwide limit of 675,000 permanent immigrants, where certain exceptions for close family members can be considered. Legalized permanent residency allows a foreign national to live and work permanently and lawfully in the United States. Lawful permanent residents (LPRs) are eligible to apply for nearly all jobs except those jobs not legitimately restricted to U.S. citizens and can stay on in the country even if they are unemployed. Non citizens are also admitted each year into the United States on a temporary basis. Each year, the President and the Congress determine a separate number for refugee admissions.
An example of immigration law can be understood if we look at the policies that are associated with the Immigration to the United States, which is based on the following principles: admitting immigrants with skills that are valuable to the U.S. economy, the reunification of families, promoting diversity and protecting refugees. An important principle governing immigration policy is family unification. Immediate relatives of U.S. citizens are benefitted from this Family-based immigration program and are admitted through the family preference system. Congress established a complicated system for calculating the available number of family preference visas for any given year in order to balance the overall number of immigrants arriving based on family relationships.