WASHINGTON/NEW YORK (Reuters) – U.S. Federal Reserve policymakers are not as divided as it may appear and are generally operating under the same framework for determining when to raise interest rates, one Fed official said on Thursday, while another said the differences of opinion reflect the countervailing economic data. Fed Chair Janet Yellen and other officials have said they expect a rate hike will be needed by the end of this year, but two Fed governors this week urged caution.