Forty five states' constitutions recognize and secure the right to keep and bear arms in some form, and none of those prohibit the open carrying of firearms. Five state constitutions provide that the state legislature may regulate the manner of keeping or bearing arms, and advocates argue that none rule out open carry specifically. Nine states' constitutions indicate that the "concealed" carrying of firearms may be regulated and/or prohibited by the state legislature. Open carry advocates argue that, by exclusion, open carrying of arms may "not" be legislatively controlled in these states. But this is not settled law.