By Karen Brettell NEW YORK (Reuters) – The U.S. dollar fell against a basket of currencies on Tuesday, as investors evaluated how much of the Federal Reserve’s expected move to hike rates this week and beyond was already priced in. The dollar index hit a 20-year high last week on expectations the U.S. central bank will be more aggressive than peers in tightening policy, with inflation running at its fastest pace in 40 years. But investors are also questioning whether most of the Fed’s hawkishness is already factored in and the dollar’s bull run may be due for a pause. “I think that so much goo…