Is there anything more clearly appropriate for state rather than federal legislation than minimum wages? First, according to this Department of Labor website, all but six states already have minimum wage laws. Second, $5.15 per hour in New York city buys about half what it buys in Des Moines. How can one possibly argue that the amount proper for one of those cities is right for the other? Finally, this is another factor that would allow states to "compete" for businesses and citizens.