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.
Irvington, sometimes known as Irvington-on-Hudson, is an affluent suburban village in the Town of Greenburgh in Westchester County, New York, United States. It is located on the eastern bank of the Hudson River, 20 miles (32 km) north of midtown Manhattan in New York City and is served by a station stop on the Metro-North Hudson Line. To the north of Irvington is the village of Tarrytown, to the south the village of Dobbs Ferry, and to the east unincorporated parts of Greenburgh, including East Irvington. Irvington includes within its boundaries the community of Ardsley-on-Hudson, which has its own zip code and Metro-North station, but which should not be confused with the nearby village of Ardsley, New York. The population of Irvington at the 2000 census was 6,631. The estimated population in 2007 was 6,682.