For politically correct reasons after the Supreme Court decision saying the BSA could ban gays from the organization. the second point of the Scout Law is Loyalty. He certainly wasn’t loyal to the BSA during that time.
Romney fails on the point of a Scout is Brave. A Scout is BRAVE.
A Scout can face danger even if he is afraid. He has the courage to stand for what he thinks is right even if others laugh at or threaten him.
Boy Scout Basics:
http://home.forbin.com/muzzy/webelos/Basics.html