 Go to undo.org for more. Become a U.S. citizen with the help of the Los Angeles Public Library. Get free and confidential information on immigration and citizenship. Visit lapl.org forward slash NAI to find your nearest library or call us at 213-228-7390. That's lapl.org forward slash NAI or 213-228-7390 and start your path to becoming a U.S. citizen with the help of the Los Angeles Public Library.