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.
Calabasas is an affluent city in Los Angeles County, California in the western United States. It is located in the southwestern San Fernando Valley and the Santa Monica Mountains. As of the 2000 census, the city population was 23,123. The city was formally incorporated in 1991. The Leonis Adobe, an adobe structure in Old Town Calabasas, dates from 1844 and is one of the oldest buildings in the greater LA area. An extensive 2006 Secondhand Smoke Control Ordinance caused the city to receive international attention.