Migration and Naturalization Law encompasses a broad range of legal provisions that address the entry, exit, and status of individuals within a country, including non-citizens and those seeking citizenship.

The Department of Homeland Security, through its various agencies such as U.S. Citizenship and Immigration Services (USCIS) and Customs and Border Protection (CBP), is the primary agency responsible for enforcing Migration and Naturalization Law in the United States.

The distinction between immigrants and non-immigrants lies in their intent to reside in a country. Immigrants seek permanent residency, while non-immigrants have a specific, temporary purpose, such as work, study, or tourism.

There are three main pathways to U.S. citizenship: birth in the United States, naturalization through lawful permanent residency, and marriage to a U.S. citizen. Each pathway has its own specific requirements and procedures.

Naturalization is the process by which a non-citizen becomes a citizen of a country. In the United States, naturalization typically involves meeting certain eligibility requirements, such as lawful permanent residency, residency in the U.S. for a specified period, and passing a citizenship test.

A green card is a permanent resident card that allows an individual to live and work in a country indefinitely. A visa, on the other hand, is a temporary permit that allows an individual to enter a country for a specific purpose, such as tourism, work, or study.

Illegal immigration, undocumented immigration, and unauthorized presence are all terms used to describe the situation of an individual who is present in a country without legal authorization.

A deportation order is a legal order issued by a government requiring an individual to leave the country. It is typically issued as a consequence of violating immigration laws or committing certain crimes.

Refugee status, asylum, and political asylum are all terms used to describe the process of granting protection to an individual who has fled their home country due to a well-founded fear of persecution based on race, religion, nationality, political opinion, or membership in a particular social group.

A visa waiver program is an agreement between countries that allows citizens of one country to travel to the other country for a specific period of time without obtaining a visa. The purpose of such programs is to facilitate travel, promote tourism, and strengthen economic ties between the participating countries.

Temporary protected status (TPS) is a temporary immigration status granted to individuals who are unable to safely return to their home country due to ongoing armed conflict, natural disaster, or other extraordinary circumstances. TPS allows these individuals to remain in the United States and work legally for a specified period of time.

Humanitarian parole is a discretionary form of immigration relief that allows an individual to temporarily remain in the United States for urgent humanitarian reasons or significant public benefit. It is granted on a case-by-case basis and does not lead to permanent residency or citizenship.

Deferred action is a discretionary form of immigration relief that allows an individual to temporarily remain in the United States without fear of deportation while their immigration status is being determined. It is typically granted to individuals who meet certain criteria, such as having arrived in the United States as a child or having a U.S. citizen or permanent resident child.

Denaturalization is the process of revoking an individual's citizenship. It is a rare occurrence and can only be done through a legal proceeding in which the government proves that the individual obtained citizenship illegally or through fraud.

A quota system in immigration law is a mechanism used to limit the number of immigrants admitted to a country, ensure diversity in the immigrant population, and protect the national security and interests of the country.