Your right. Hemp and Marijuana are quite different. They come from the same plant but marijuana has very high THC and low CBD levels, while hemp is the exact opposite.
Still, combined they are even more useful; marijuana, for its proven uses in medicine, and hemp, for its proven uses in agriculture.
The fact is they outlaw both. I'd consider it a triumph if they were to at least repeal hemp law. It's undeniably effective. It grows fast, strong, and dense; not to mention cutting down trees is part of our carbon emission problem (on both ends). But law makers will never repeal one and not the other for trivial reasons. There are countries around the world that allow hemp to grow, but not marijuana; and they are better for it.
But that is where the dilemma is.