A federal judge has ruled that a lawsuit may continue against the enforcement of South Dakota's constitutional amendment "E."

The South Dakota Farm Bureau, along with several producers and livestock associations, is challenging the amendment, which bans several types of corporate farming.

The amendment severely limits livestock producers' abilities to join other farmers in business relationships, according to Mike Held, administrative director for the Farm Bureau.

Under the amendment, producers can't enter limited liability arrangements with fellow producers or investors, can't feed animals for anyone organized as a corporation or partnership even if those businesspeople are farmers, and can't forward contract for the sale of livestock.