The independent article is a hack job! It makes no mention of these other factors, it is at its very essence...Yellow Journalism.
Which was initiated by William Randolph Hearst...
"The newspaper magnate apparently invested heavily in forests; but since hemp can also be made into paper (with only minimal processing), Hearst didn’t want the burgeoning industry competing with his trees and wood pulp. He lobbied against hemp agriculture and even ran stories in his papers — did I mention the yellow journalism? — that linked hemp to its bad-seed cousin, marijuana. It eventually became illegal to grow industrial hemp in the United States, much to Canada’s agricultural benefit.
But while the two related strains of plants look similar, hemp contains only a miniscule fraction of the tetrahydrocannabinol (THC) that gives marijuana its psychoactive properties — certainly not enough to act as a drug. It can, however, be used for food, cloth or, as Hearst knew all too well, paper. It’s simple to grow pesticide-free and it’s easier on the soil than cotton. Betsy Ross used it as her favored flag-making material and George Washington grew it along with last week’s presidential gardener, Thomas Jefferson.
According to Discovery News, though, the United States’ main problem with hemp is that law enforcement has trouble telling it apart from its illegal cousin. That’s why scientists at the University of Minnesota are trying to genetically engineer the plant so it’s missing the tiny hairs where THC concentrates. The logic goes that if the hairs are missing, it’ll be easy to spot hemp in a flash.