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.
Aurora is a Home Rule Municipality spanning Arapahoe, Adams, and Douglas counties in Colorado. The city is the third most populous city in the state of Colorado and the 58st most populous city in the United States. The city had an estimated population of 319,057 in 2008-07-01. The city and its western neighbor are the principal cities of the Denver-Aurora-Broomfield, CO Metropolitan Statistical Area, which in 2007 had an estimated population of 2,464,866. , the estimated population of the Denver-Aurora-Boulder Combined Statistical Area was 2,998,878 on 2007-07-01.