The laws regarding the legality of CBD, marijuana, and hemp are ever changing. Currently, CBD derived from industrial hemp plants is considered legal at the federal level. This is due to the Farm Billwhich legalized hemp in 2018. CBD extracted from other cannabis plants is still illegal federally. The state legality varies across the country. Currently 47 US states hold CBD as legal. Make sure to review your state laws on the matter.
The Farm Bill, which passed on December 20th 2018, legalized industrial hemp. It allows for its use in food and medicine but differs all regulations to the individual states. This means that while legal federally, states will have the final say on the legality of hemp and CBD. While CBD is legal in most states it can be considered a grey area or illegal in some states. Be sure to verify the most current law in your state.