As of my knowledge cutoff in September 2021, the laws regarding the legality of cane swords (also known as sword canes) can vary from state to state in the United States. While cane swords are generally regulated, the specific legality may differ depending on the state's laws and regulations.

In some states, cane swords are explicitly prohibited or considered illegal weapons. Examples of states that have laws banning cane swords include California, New York, and Illinois. These states typically categorize cane swords as concealed weapons or offensive instruments, which are subject to strict regulations or outright prohibition.

However, it's important to note that laws can change over time, and it is always advisable to consult the most current and accurate legal sources or consult with legal authorities to determine the legality of cane swords in your specific jurisdiction.

If you are interested in owning or possessing a cane sword, it is recommended to research and familiarize yourself with the laws and regulations of your particular state or consult with local law enforcement or legal authorities to obtain accurate and up-to-date information.