CEDAR RAPIDS, IOWA -- Democratic presidential candidate Barack Obama today called for reform of the nation's energy economy, accusing President Bush of "letting the oil companies write his oil policy" and promising to send Americans gasoline rebate checks, double automobile fuel-efficiency standards and wean the United States from dependence on foreign oil. "It's too important for us to be doing business as usual," Obama said in a town hall meeting here after a private session with victims of the June floods. "When George Bush came into office he put Dick Cheney in charge of energy policy. . . . We...