He would have faced strong opposition from other political figure heads who were against the expansion of the rights of African Americans, making his Presidency much more challenging that it already was.
Key events:
1918: world war I ends.
1920: nineteenth amendement ratified.
1928: Herbert Hoover elected president.
1929: Stock Market Crash.
1930: Hawley Smoot Tariff passed.
1932: Franklin Roosevelt elected president.
1933: New Deal begins.
Hope this helps.