There are several visas that a foreign national may apply for to be lawfully admitted into other country, either temporarily or permanently. The purpose of your travel determines what type of visa is required to you. As an applicant, you have to meet all requirements to receive the category of visa for which you apply. When you apply for visa, a consular officer will determine whether you are eligible to receive a visa, and if so, which visa category is appropriate for you.
Visas are broadly divided into two categories.
1. Immigrant Visa (IV)
2. Non-Immigrant Visa (NIV)