Reinterpreting the roots of twentieth-century American labor law and politics, Ruth O'Brien argues that it was not New Deal Democrats but rather Republicans of an earlier era who developed the fundamental principles underlying modern labor policy. By examining a series of judicial rulings from the first three decades of the century, she demonstrates that the emphasis on establishing the procedural rights of workers that is usually associated with the National Labor Relations Act of 1935 actually emerged over a decade earlier, in the Republican-formulated labor legislation of the 1920s....