The Secretary of the Navy may not issue a certificate under this chapter until he satisfies himself by investigation that it is necessary.

(Aug. 10, 1956, ch. 1041, 70A Stat. 485, §7729; renumbered §8899, Pub. L. 115–232, div. A, title VIII, §807(d)(10), Aug. 13, 2018, 132 Stat. 1837.)