What is the primary source of United States Immigration Law?

The primary source of United States Immigration Law is the Immigration and Nationality Act (INA). The INA provides the legal framework for immigration policies, procedures, and classifications in the U.S. This includes regulations on how individuals may enter, stay, and become citizens of the United States. The Act outlines the criteria for different visa categories, the rights and responsibilities of non-citizens, and the processes for deportation and appeals. Because immigration law is specific to the conditions under which non-citizens can live and work in the U.S., the INA is the cornerstone of all immigration-related case law and statutory regulations.

In contrast, the other options refer to laws that govern different aspects of employment and discrimination. The National Labor Relations Act (NLRA) focuses on labor relations and workers' rights to organize and bargain collectively. The Americans with Disabilities Act Amendments Act (ADAAA) addresses rights related to disability discrimination in employment. Title VII of the Civil Rights Act of 1964 prohibits employment discrimination based on race, color, religion, sex, or national origin. While these laws are essential in their respective areas, they do not specifically govern immigration law.