May copper is starting out under noted pressure today, with some traders feeling that part of this morning's downside action might be the result of a sharp run up in copper prices from last week's lows. From last week's lows to yesterday's highs, the May copper market forged a 19 cent per pound rally, with open interest reaching up to 159,716 contracts. In the early going today, May copper might have difficulty withstanding the negative sentiment for physical commodity markets in the wake of the macro economic shift from the March 13th FOMC meeting minutes, unless the market is presented with much stronger than expected US economic data later in the session.