The United States has reached its statutory debt limit of $31.4 trillion. As Washington gears up for yet another partisan showdown over whether to raise the debt ceiling, with congressional Republicans seeking concessions from Democrats in exchange for their votes, many are understandably nonchalant about it. Americans feel they have seen this movie before, and the story usually ends with the bickering politicians reaching a last-minute compromise. So, no need to ring the alarm bells.