The United States recognizes the right of asylum of individuals as specified by international and federal law. A specified number of legally defined refugees, either apply for asylum from inside the U.S. or apply for refugee status from outside the U.S., are admitted annually. Refugees compose about one-tenth of the total annual immigration to the United States, though some large refugee populations are very prominent. Since World War II, more refugees have found homes in the U.S. than any other nation and more than two million refugees have arrived in the U.S. since 1980. In the years 2005 through 2007, the number of asylum seekers accepted into the U.S. was about 40,000 per year. This compared with about 30,000 per year in the UK and 25,000 in Canada. The U.S. accounted for about 10% of all asylum-seeker acceptances in the OECD countries in 1998-2007. The United States is by far the most populous OECD country and when corrected for population it receives less than average: For example, in 2010-14 (before the massive migrant surge in Europe in 2015) it was positioned as 28 of 43 industrialized countries reviewed by UNHCR, after Canada, the Scandinavian coutries, France, Germany, the United Kingdom and others.
Asylum has three basic requirements. First, an asylum applicant must establish that he or she fears persecution in their home country. Second, the applicant must prove that he or she would be persecuted on account of one of five protected grounds: race, religion, nationality, political opinion, and social group. Third, an applicant must establish that the government is either involved in the persecution, or unable to control the conduct of private actors.