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.
Three Rivers is a city in Live Oak County, Texas, United States. The population was 1,878 at the 2000 census. The city is named for its proximity to three rivers, the Atascosa River, the Frio River, and the Nueces River (the Atascosa joins the Frio north of the city, while the Frio joins the Nueces south of the city). Originally named Hamiltonburg, the city name was changed when mail meant for the city was accidentally delivered to Hamilton, Texas instead.