TOKYO, July 28 : The U.S. dollar held at a one-month high on Tuesday as traders weighed a slim but lingering chance of a rate hike at the Federal Reserve's upcoming meeting, even as falling oil prices eased some concerns over inflation.The dollar index, which measures the greenback against a basket of currenc

TOKYO, July 28 : The U.S. dollar held at a one-month high on Tuesday as traders weighed a slim but lingering chance of a rate hike at the Federal Reserve's upcoming meeting, even as falling oil prices eased some concerns over inflation.The dollar index, which measures the greenback against a basket of currenc