(a) Requirements Any person formerly a citizen of the United States who (1) prior to September 22, 1922, lost United States citizenship by marriage to an alien, or by the loss of United States citizenship of such person's spouse, or (2) on or after September 22, 1922, lost United States citizenship by marriage to an alien ineligible to citizenship, may if no other nationality was acquired by an affirmative act of such person other than by marriage be naturalized upon compliance with all requirements