The laws surrounding marijuana are changing rapidly, with most states either legalizing it in some form, or considering legislation on the issue. A running list of states and their stance on marijuana can be found on Wikipedia. Be careful to note the differences in state laws. For example, some states have only decriminalized marijuana instead of fully or partially legalizing it. Other state have legalized marijuana, but only for medical usage. Furthermore, there can be many significant but small differences between state laws, and it is best to seek advice from an attorney in your area if you have questions or concerns.