§ 733a.
All citizens of the United States who have resided or who shall after March 4, 1927, reside in the island for one year shall be citizens of Puerto Rico.
([Mar. 2, 1917, ch. 145, § 5a], as added [Mar. 4, 1927, ch. 503, § 2], [44 Stat. 1418]; amended [May 17, 1932, ch. 190], [47 Stat. 158].)