The U.S. dollar edged higher against a basket of currencies on Tuesday, nearing a two-month peak touched last week, as traders awaited the Jackson Hole Symposium later in the week. The U.S. dollar index =USD - which measures the currency against six major counterparts - was up 0.2% at 103.57. The index was sitting just shy of the two-month high of 103.68, reached last week as worries over China's economy and bets U.S. interest rates will stay high lifted the greenback. Overall moves in currency markets were expected to be limited ahead of a speech by Federal Reserve Chair Jerome Powell at the Fed's central bank ... (full story)