Doug Yurchey doesn't even know much about marijuana and hemp, let alone the differences.
Marijuana contains enough tetrahydrocannabinol to give people a high, hemp on the other hand has been cultivated for it's industrial properties, and therefore minute tetrahydrocannabinol levels.
Hemp is the industrially useful member of the family, not marijuana.
The US Hemp Industries Association successfully appealed against the DEA to allow hemp food products to be sold in the US. So much for it being banned.
Industrial cultivation of hemp is going strong in Europe and Canada, again, so much for hemp being banned.