Don't let the protectionists get you down. Refresh yourself at Cafe Hayek.
And a falling dollar generally reflects worsening U.S. domestic policies, such as inflationary money-supply growth, the likelihood of higher taxes or more command-and-control regulations, and, indeed, an increased probability of U.S. protectionism - protectionism that, by stifling entrepreneurial dynamism, makes America a less attractive place for foreigners to do business.