Senators Chuck Grassley of Iowa and Roger Marshall of Kansas will be introducing legislation this week to push back against California’s Proposition 12 law that forces that state’s livestock housing rules on other states.

He says it shouldn’t be up to California to tell other states how they should be producing their agricultural products.

Grassley says California is not only being unfair to its own consumers but to producers in other states and is likely violating the U.S. Constitution with Proposition 12.

Recently the Ninth Circuit Federal Court of Appeals ruled against the National Pork Producers Council and American Farm Bureau on their challenge to Proposition 12.