How members of Congress vote on increases in the minimum wage is a function of several factors, most notably party affiliation and constituent interest. But also among those factors is the existence of "right-to-work" laws in the representative's state and the presence of labor unions,...

During the Progressive period of American history the debate over the minimum wage was often between those who clung to traditional economic theory as a reason for not having a minimum wage and those who saw the efficiency-wage benefits of adopting one. Although the latter argument proved quite...