The Trump administration continues to recommend legislation that will limit the number of immigrants who can come to the U.S. annually and be more restrictive about who is allowed to immigrate to the U.S. Obtaining a green card is the first step to gaining U.S. citizenship. It is important to understand what a green card provides and what it doesn’t. These facts about green cards are compiled from information published by the U.S. Citizenship and Immigration Service (USCIS).