The Constitution specifies that in addition to being "natural born," the president must be 35 years old and with a minimum 14-year residency in the country. The same applies to the vice president. Nickles's legislation, inspired by an aide who adopted two children from Eastern Europe, does not address immigrants' right to hold America's highest office. But his colleague Orrin Hatch, Republican of Utah, who chairs the Senate Judiciary Committee, last year introduced a constitutional amendment to loosen the prohibition on foreign-born citizens serving as president. The Constitution's framers chose the term "natural born" not only to highlight the need...