Every year, the U.S. makes a limited number of immigrant visas (which lead to U.S. green cards or lawful permanent residence) available to people from certain countries around the world. These are allotted through a random, lottery drawing. However, only citizens of certain countries (the ones that have sent the fewest immigrants to the U.S. in recent years) can apply. And you must meet certain educational and work requirements in order to apply or qualify. What's more, even if your name is drawn, you need to get through a complex, time-sensitive application process in order to succesfully collect your U.S. immigrant visa.