What are the visa & residency requirements in Columbus?

"In order to obtain a visa to live in Columbus, an individual must first apply for a nonimmigrant visa through the U.S. 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 travel to the United States. In order to apply for residency in Columbus, an individual must first obtain a valid visa. Once the visa is obtained, the individual must then apply for a green card through the U.S. Citizenship and Immigration Services. This process involves submitting an application, providing supporting documents, and attending an interview. Once the green card is approved, the individual can live and work in the United States," mentioned another expat when asked about moving to Columbus, the United States.