The Supreme Court’s had a lot to say about food—and federal power—lately.

Today’s decision in the Swift case says that the Chicago stockyards are part of the interstate commerce in meat, which means the federal government can regulate them under the Sherman Antitrust Act. It’s quite a shift from the Court’s position 10 years ago in a famous sugar monopoly case.

Last year, in a case involving artificially colored margarine, the Court said the Constitution gives Congress sweeping tax powers. So if Congress thinks a product is unhealthy or unsafe, it can tax it out of production.