The House Foreign Affairs Committee is opening an investigation into whether the U.S. Ambassador to Brazil is peddling to Brazil a proposed purchase of ethanol as a boost to the Trump re-election campaign in Iowa. Citing reports in the newspaper O Globo, Representatives Eliot Engel (D-New York) and Albio Sires (D-New Jersey), the chairmen of the full committee and subcommittee on the Western Hemisphere respectively, have demanded a response from U.S. Ambassador Todd Chapman (a career foreign service officer, not a political appointee, who denies linking the discussion to electioneering) as to whether he mentioned the upcoming election and Trump’s standing in Iowa polls. They wrote: We ask that you respond in writing by 5:00 p.m. EST...