It’s just straws in the wind so far. India’s Ministry of Culture announces that foreign tourists can no longer pay in dollars when visiting the Taj Mahal and other heritage sites; they have to pay in good, hard rupees. Iran and Venezuela call for a joint OPEC statement on the weak US dollar. Rap star Jay-Z’s latest video shows our hero flashing a wad of euros, not dollars. Only straws in the wind, but all in the past couple of weeks. For the majority of Americans who do not travel abroad, the only visible effect so far of the dollar’s steep fall has been higher fuel prices at the pump. The Chinese imports that fill the big-box stores still cost the same, because the Chinese yuan is still pegged to the American dollar. But that may be about to change, along with many other things. At the beginning of 2003, one euro bought one US dollar. Eighteen months ago, it bought $1.20. Now it is pushing $1.50, and there is no reason to think that it will stop there. Three of the world’s biggest oil exporters, Iran, Venezuela and Russia, are demanding payment in euros rather than dollars. […]