HELENA - The House is backing a plan to clarify self-defense laws and expand the right to carry concealed weapons, despite criticism it is unnecessary in Montana.The bill would let people carry concealed weapons inside of city limits - even without a permit to do so.It would make clear that those who use a weapon in self-defense are innocent until police prove that the situation indeed did not warrant self defense, and makes certain that everyone has the right to self-defense without an obligation to first run away.