This document provides an overview of natural born citizenship from feudal origins to modern times. It discusses the development of jus sanguinis (citizenship by blood) and jus soli (citizenship by birthplace) in English common law and how these principles were incorporated into American law. Key cases like US v. Wong Kim Ark established that children born in the US are citizens regardless of parents' citizenship. While the ongoing debate questions whether natural born citizenship requires sole US citizenship from birth, most agree it includes those born abroad to US citizen parents. The document also notes concerns raised about Chester A. Arthur's eligibility due to his foreign-born father.