Not along ago, Illinois pharmacist and attorney Lawrence Joyce began to realize his country and his political party were facing what he considered to be a nightmare. Concerns about the eligibility for the presidency of Republican candidate Sen. Ted Cruz, Texas, who was born in Canada to a Cuban father and an American mother, were raised by rival Donald Trump. Though they may at first have seemed laughable, the legal case against Cruz was one Joyce, a Ben Carson supporter, thought he understood. The Constitution requires the president to be a "natural born" citizen of the United States, and as...