© Reuters. The United States Federal Reserve Board building is shown in Washington
By Ann Saphir
SAN FRANCISCO (Reuters) - The U.S. Federal Reserve is expected to keep interest rates unchanged this week, deferring any possible increase until September or December, as policymakers hold out for more evidence of a pickup in inflation.
Central to the debate at the Fed's July 26-27 policy meeting will be how to reconcile upbeat U.S.