Forty cents an hour. Forty hours a week.

Can Congress set those minimum wages and maximum hours for workers across the nation? A unanimous Supreme Court says “yes”…because the goods those workers produce might go into interstate commerce.

In today’s Darby case, the Court reversed an old decision, and an old tradition of leaving such issues up to the states. They say the 10th Amendment—long used to keep the federal government out of workplace issues—doesn’t limit federal power at all.