The U.S. Dollar fell against the Euro in mid-afternoon trading in Asia because investors are speculating that the European Central Bank will increase its key interest rate next month, the first increase in a year. The market is anticipating that the ECB will hike its interest rate by 25 basis points or more, following comments made by ECB president, Jean-Claude Trichet, since July, to curb rising inflationary pressures in the Euro zone.