What are the visa & residency requirements in Denver?

"In order to obtain a visa to live in Denver, Colorado, an individual must first apply for a nonimmigrant visa through the United States Department of State. This process involves submitting an application, providing supporting documents, and attending an interview at the U.S. Embassy or Consulate. Once the visa is approved, the individual can then travel to the United States. In order to apply for residency in Denver, Colorado, an individual must first obtain a valid visa. Once the visa is obtained, the individual must then apply for a green card, which is the official document that grants permanent residency in the United States. This process involves submitting an application, providing supporting documents, and attending an interview at the U.S. Citizenship and Immigration Services office. Once the green card is approved, the individual can then live and work in the United States," remarked another expat in Denver, the United States.