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.
Techny is a neighborhood of Northbrook, Illinois, United States. Techny was once a separate community but was eventually annexed by Northbrook. The North American headquarters of the Divine Word Missionaries has been located in Techny since 1896. The Divine Word Missionaries opened St. Mary's Mission Seminary in Techny in 1909; this was the first seminary which prepared priests for foreign missions. Techny has its own post office with ZIP code 60082.