What does the term 'aliens' refer to in the context of immigration law?

In the context of immigration law, the term 'aliens' specifically refers to individuals who do not possess U.S. citizenship. This classification encompasses a wide range of non-citizens, such as foreign nationals, immigrants, and visa holders. The legal framework surrounding immigration is often focused on the rights, responsibilities, and categorization of these individuals, making it essential to accurately identify them within the context of U.S. laws and regulations.

The term is broad and includes various categories of non-citizens, from permanent residents—often referred to as green card holders—to temporary visa holders, and undocumented individuals. Understanding this definition is crucial for interpreting immigration policies and procedures, as well as determining individuals' eligibility for different immigration benefits and statuses.