In 2017, out of the U.S. foreign-born population, some  were naturalized citizens,  were lawful permanent residents,  were temporary lawful residents, and  were unauthorized immigrants. Among current living immigrants to the U.S., the top five countries of birth are Mexico, China, India, the Philippines and El Salvador. Until 2017, the United States led the world in refugee resettlement for decades, admitting more refugees than the rest of the world combined.