" The debate also marked the limits of the Progressive vision: both sides in this debate availed themselves, at one time or another, of the rhetoric of white supremacy. Eight million people of color in the Pacific and the Caribbean, from the Philippines to Puerto Rico, were now part of the United States, a nation that already, in practice, denied the right to vote to millions of its own people because of the color of their skin. "

― Jill Lepore , These Truths: A History of the United States