The issue before Congress is straightforward. With laws like Massachusetts Question 3, should one state be able to use its market to control how farmers in other states raise animals?

The current debate in Congress is not about overriding California’s voters (“China-backed Big Pork wants to override 63% of California voters. Even conservatives are mad,” March 12). It is about Congress exercising the authority expressly assigned to it in the Constitution when state rules reshape interstate commerce.