Einer Elhauge, Why Ted Cruz Is Not a Natural Born Citizen Eligible to Be President and Why the Issue Is Not a Political Question (Harvard Pub. Law Working Paper No. 16-11, Mar. 16, 2016).
Abstract: This amicus brief explains why Ted Cruz fails to satisfy the "natural born citizen" requirement that the U.S. Constitution makes necessary to be eligible to be President. It also explains why the issue is not a political question.