U.S. Stocks Fall as ECB Tightens Rules on Greece While Oil Drops

Greek Prime Minister Alexis Tsipras, left, next to European Commission President Jean-Claude Juncker at the European Commission headquarters in Brussels on Feb. 4, 2015.

Photographer: Emmanuel Dunand/AFP via Getty Images

The Standard & Poor’s 500 Index fell, after the biggest two-day rally in almost a month, as the European Central Bank tightened its rules on Greece’s bailout and oil retreated for the first time in five days.

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