IOWA CITY, Iowa — Michele Bachmann said again Monday that the American intervention in Libya was a mistake — but this time she had to talk over a heckler who shouted vulgarities at her. Jenny Watkins, 22, shouted at Bachmann from the back of a large room at the University of Iowa here, while a male companion held a sign that read "Desensitized Homosexual" — a reference to an earlier part of Bachmann's speech, when she said she worried that children in elementary school would be desensitized to homosexuality. The two might have been escorted out with little fanfare, but...