Delta 8 THC – How The 2018 Farm Bill Legalized ALL Hemp Derivatives. Delta 8 explained in great details. What does it mean for the hemp industry. watch this to get analysis of the legal issues the D8 industry faces. What is Delta 8 THC – we explain about this isomer of THC that can be legal when derived from hemp extract. D8 THC is bad – D8 Hemp is good. To be honest, neither are really bad or good – but the legality of them is questionable until we get more clarity from the government – and a change in administration can impact the way the laws are enforced.