The Diversity Immigrant Visa program is a United States congressionally-mandated lottery program for receiving a United States Permanent Resident Card. It is also known as the Green Card Lottery. The lottery is administered on an annual basis by the Department of State and conducted under the terms of Section 203(c) of the Immigration and Nationality Act (INA). Section 131 of the Immigration Act of 1990 (Pub. L. 101-649) amended INA 203 to provide for a new class of immigrants known as "diversity immigrants" (DV immigrants). The Act makes available 50,000 permanent resident visas annually to persons from countries with low rates of immigration to the United States.
The first program was DV-1995, and the following 13 countries were ineligible from the start: Canada, China (mainland), Dominican Republic, El Salvador, Haiti, India, Jamaica, Mexico, Philippines, South Korea, Taiwan, United Kingdom (except Northern Ireland) and its dependent territories, and Vietnam.
This is how I got into the country
United States lawful permanent residency refers to a person's immigration status: the person is authorized to live and work in the United States of America on a permanent basis.
A United States Permanent Resident Card (USCIS Form I-551), formerly Alien Registration Card or Alien Registration Receipt Card (INS Form I-151), is an identification card attesting to the permanent resident status of an alien in the United States. It is known informally as a green card because it had been green in color from 1946 till 1964, and it has reverted to that color since May 2010. Green card also refers to an immigration process of becoming a permanent resident. The green card serves as proof that its holder, a Lawful Permanent Resident (LPR), has been officially granted immigration benefits, which include permission to reside and take employment in the USA. The holder must maintain permanent resident status, and can be removed from the United States if certain conditions of this status are not met.