According to the Constitution, to be eligible for the presidency (or vice presidency), a person must be a “natural born citizen” of the United States. The purpose of this restriction is to prevent a foreigner from becoming the nation’s chief executive. How can people become U.S. citizens? There are just two ways; either they are born citizens or they become citizens later in life. In the first case, anyone who is a citizen by nature of his birth is a “natural born citizen.” In the second case, anyone who is a citizen of another country at birth, but is granted...