The Omaha Tribe of Nebraska is considering getting into the lucrative marijuana business, but at least one tribal expert fears doing so could put the tribe at risk of losing any investment it may make in marijuana industries. The tribe plans to hold a referendum Tuesday in which members will vote on whether the tribe should allow recreational use of marijuana, medicinal use of marijuana, and growing industrial hemp on its northeast Nebraska reservation. Ultimately, however, the Omaha tribal council will decide all three questions. The referendum vote simply will give the council guidance on whether to move forward, according to an information sheet distributed by the tribe. [continues 388 words]