<Li> Jump up ^ "A Guide to Naturalization". U.S. Citizenship and Immigration Services . Retrieved 2009 - 04 - 25 . (USCIS Publication M - 476 (rev. 01 / 09)) </Li> <Li> Jump up ^ "Form M - 685 Pathway to U.S. Citizenship" (PDF). USCIS . Retrieved 2009 - 04 - 25 . </Li> <Li> Jump up ^ John R. Vile (2005). "President, Qualifications". The Constitutional Convention of 1787: a comprehensive encyclopedia of America's founding . ABC - CLIO . pp. 605--606 . ISBN 978 - 1 - 85109 - 669 - 5 . </Li> <Li> Jump up ^ Jill Pryor, The Natural - Born Citizen Clause and Presidential Eligibility: An Approach for Resolving Two Hundred Years of Uncertainty </Li>

How was citizenship defined in the united states before and after the 14th amendment