A district court issued a permanent injunction Friday prohibiting Iowa State University administrators from using trademark policy to stop a campus group from printing university-themed T-shirts that depict a marijuana leaf.

A district court issued a permanent injunction Friday prohibiting Iowa State University administrators from using trademark policy to stop a campus group from printing university-themed T-shirts that depict a marijuana leaf.

WASHINGTON — Supporters of industrial hemp are optimistic the crop has a future in a state known for sweeping fields of corn and soybeans.

WASHINGTON — Supporters of industrial hemp are optimistic the crop has a future in a state known for sweeping fields of corn and soybeans.