Obama and Kindergarten Sex Ed

John West analyzes the flap concerning Obama's view of sex education for kindergartens. West includes links to Illinois Senate Bill 99, the Obama campaign's alignment with Sexuality Information And Education Council of the United States (SIECUS), and their Guidelines for Comprehensive Sexuality Education: Kindergarten through 12th Grade.

I expect there are strong arguments to teach sex ed for kindergarten students. Why would Obama even bother to deny that he had taken this position? Is this the 'change' for which he campaigns?