The Brief A federal ban on intoxicating hemp products is set to take effect on Nov. 12. Minnesota businesses said the ban could devastate their operations and the wider hemp industry. Hemp businesses in Minnesota are bracing for major changes as a federal ban on intoxicating hemp products looms. Minnesota hemp businesses fear federal ban will devastate industryWhat we know:A federal ban targeting hemp-derived THC products is scheduled to begin on Nov. 12. The ban would not make THC products illegal in Minnesota, but customers would not be able to use credit cards to buy them if the federal restrictions go into effect.