Aside from a formal proclamation of unity of ideals and intentions with the candidate, the White House took practically no part in the campaign. Not until October, when a delegation of pro-League Republicans called at the White House, was it known that the President's health had temporarily taken a turn for the worse and that active participation would have been impossible. It could hardly have affected the result very much in either direction. Whether or not the President had intended to turn over the Government to Hughes in November, 1916, he did nothing so unkind to Harding in November, 1920. The President-elect was allowed plenty of time to try to choose his Cabinet and his policies, but the Administration had gradually withdrawn from all connection with European affairs, and it was made known soon after Congress met in December that nothing would be done which might embarrass the new Administration in its handling of foreign relations and interrelated problems. The history of Woodrow Wilson's Administration virtually ends with the rejection of the treaty; but the business of government had to be carried on through the final year. During 1920 old issues that had long been hidden behind the war clouds came out into the open again. Obregon overthrew Carranza and entered into power in Mexico, but the Wilson Administration maintained neutrality during the brief struggle. Ambassador Fletcher had resigned, but Henry Morgenthau, appointed to succeed him, did not obtain the confirmation of the Senate, and the new Administration had not been formally recognized at the end of President Wilson's term. A controversy over the status of American oil rights was one of the chief impediments to recognition, though Obregon's general attitude was far more friendly to America than that of Carranza.