Immigration Law
United States immigration and naturalization law is federal law and administered by federal agencies and courts. This means that lawyers who practice immigration law are not confined to the state in which they are admitted to the bar and can represent clients in the entire country and at all foreign representations of the United States. The department mainly in charge of administering the immigration and naturalization laws is the Department of Homeland Security (DHS). It has several bureaus entrusted with different tasks in implementing the immigration laws. The United States Citizenship and Immigration Services (USCIS) is mainly in charge of affirmative applications by or petitions for aliens, as non-US citizens are called in the immigration context. Immigration and Customs Enforcement (ICE) is the unit that enforces the laws in regards to removal and other sanctions against non-compliant aliens. Border and Customs Protection (BCP) is in charge of protecting the U. S. borders, also in regards to admission of aliens at the borders. Apart from DHS there are three other departments that are in charge of specific aspects of immigration. As visa issuance is concerned, many competences lie with the Department of State (DOS), especially its consular offices abroad. Unlike U. S. civil servants in the national context, consular officers enjoy a far-reaching independency, as their factual decisions, such as evaluating the credibility of visa applicants, are not subject to any review. This doctrine of consular unreviewabilty guards their decisions against most legal challenges. The Department of Labor (DOL) is entrusted with the responsibility to protect the U. S. Labor market from foreign workers, who are only allowed to work in the U.S. under very stringent rules. Thus, DOL needs, in most cases, to certify that a position in the U. S. cannot be filled with domestic workers, before one can think of hiring foreign workers. The immigration courts are mainly in charge to render decision on whether aliens may be removed (meaning deported). They are part of the Department of Justice (DOJ).
In order to obtain immigration benefits, such as permanent residence, naturalization or employment authorization, the alien, respectively a family member or an employer, needs to pay considerable application or processing fees to the respective agency and provide sometimes very comprehensive information, whereby numerous administrative rules and regulations need to be followed.
The legal framework in which immigration and naturalization law is being administered consists of statutory law, mainly embodied in the Immigration and Nationality Act (INA), formal regulations by the agencies involved, case law of the federal courts as well as the administrative appeal bodies, such as the Board of Immigration Appeals (BIA), which partly reviews immigration judges' decisions, the Board of Alien Labor Certification Appeals (BALCA), which reviews DOL decisions on labor certifications, and the Administrative Appeals Office (AAO), which reviews many USCIS decisions. In addition, a wealth of internal letters, memoranda, guidelines, advisory opinions and interpreations that guide the administration in immigration matters, as well as rules of the immigration courts and a number of convenience rules at the different agencies need to be considered in order to provide competent immigration law advice.