The United States is gearing up for its massive 250th anniversary, and the marketing machine is working overtime to sell a glossy story of liberty and justice for all. But if you look past the fireworks and the patriotic speeches, the economic reality is offensive. The latest study from the Institute for Women's Policy Research drops a heavy anchor on the festivities: American women are still trapped at earning 82 cents for every dollar a man makes—a gap that turns into a can