Financial crisis brought him back to power in 1926, and he once again became Prime Minister and Finance Minister until his retirement in 1929.
As early as 1915, Raymond Poincaré introduced a controversial denaturalization law which was applied to naturalized French citizens with "enemy origins" who had continued to maintain their original nationality. Through another law passed in 1927, the government could denaturalize any new citizen who committed acts contrary to French "national interest."
He died in Paris in 1934.