CBD use and sales are legal in every state except Nebraska, South Dakota and conditionally Idaho. 

AT the Federal level, the sale and use of CBD products are controlled by the 2018 Farm Bill passed by the US Congress and the FDA. 

The Farm Bill made CBD products legal in every State provided they are derived from industrial hemp plants (and not marijuana plants) and do not contain more than 0.03% THC by weight.  However, the FDA retains authority over the claims made by CBD vendors nationwide.  Currently the FDA has not approved CBD to be marketed as a food supplement.  This could change soon.  In March 2020 the FDA sent to Congress a proposed update to its rules governing the use and sale of CBD which included a path toward approving CBD products as food supplements.  Additionally, the FDA has enforceable rules against vendors touting unsubstantiated claims about the therapeutic potential of their products.

At the State level, the Farm Bill leaves it up to each state to regulate how, or if, CBD products can be sold and used in their State.  The only States whose regulations make it illegal to use or sell CBD are Nebraska and South Dakota.  In Idaho it is illegal unless it is derived only from specific parts of the hemp plant and contains zero THC.  All other States have made the sale and use of CBD legal provided sellers and users conform to the regulatory rules set by that State.  For example, in Florida, home to The Reliable Company, there are no rules for users, but to legally sell CBD products in Florida, sellers must pay a license fee and show on each product’s label: the cannabinoid content of the container, the seller’s contact information, and a link to that product’s Certificate of Analysis (COA) from an independent testing laboratory showing what is on the label is in the container.