DALLAS (Reuters) - Membership in the Boy Scouts of America took a steeper tumble during 2014, the first year under a policy that allows openly gay youth to participate, than in recent years of a decade-long decline. About 2.4 million youth participated in the nearly 105-year-old Texas-based scouting program, representing a 7.4 percent decline over 2013 enrollment of 2.6 million youth, Boy Scout officials said in a statement on Friday. Enrollment declined by about 6 percent in 2013. BSA officials said that decreasing participation is a trend that most youth organizations are facing. "There are many factors that go into...