LL has posted information about Concussions in Youth Athletes (including information on pending legislation in many states).

http://www.littleleague.org/learn/programs/childprotection/concussions.htm

Excerpt from LL Website:

"Not every state has adopted concussion laws, and not every state’s concussion law is applicable to a LLB program. Nevertheless, in keeping with its focus on protecting the health, safety and welfare of children, Little League International  strongly encourages all leagues and teams to not only comply with any applicable state laws, but also, to review the information and training materials on concussions which are available free of charge on the Centers For Disease Control website ..."