Immigration law determines whether a person is an alien, the rights, duties, and obligations associated with being an alien in the United States, and how aliens gain residence or citizenship within the United States. It also provides the means by which certain aliens can become legally naturalized citizens with full rights of citizenship. Immigration law serves as a gatekeeper for the border of the nation, determining who may enter, how long they may stay, and when they must leave. Immigration lawyers represent persons seeking temporary and permanent residency (green cards) status in the U.S., those interested in obtaining U.S. citizenship through a process called naturalization, and clients facing deportation and removal. Immigration attorneys may also represent businesses seeking to secure temporary visa status for foreign employees.
Guaynabo (is a municipality in the northern part of Puerto Rico, located in the northern coast of the island, north of Aguas Buenas; south of Cataño; east of Bayamón; and west of San Juan. Guaynabo is spread over 9 wards and Guaynabo Pueblo . Guaynabo is considered, along with its neighbors - San Juan and the municipalities of Bayamón, Carolina, Cataño, Toa Alta, Canovanas, Caguas, Toa Baja, and Trujillo Alto - to be part of the Área Metropolitana of San Juan . It is also part of the larger San Juan-Caguas-Fajardo Combined Statistical Area. The municipio has a land area of 70.26 km² and a population of 100,053 as of the 2000 census.