| Historical and Revision Notes | ||
|---|---|---|
| Revised section | Source (U.S. Code) | Source (Statutes at Large) | 
| 9629 | 10:1179 (proviso). 10:1395 (last sentence). 22:259 (last sentence). | Feb. 14, 1927, ch. 134 (last sentence), 44 Stat. 1096. | 
| 
 | 
 | July 17, 1914, ch. 149 (proviso), 38 Stat. 512. | 
| 
 | 
 | May 31, 1939, ch. 161 (last sentence), 53 Stat. 796. | 
2008—Par. (3). Pub. L. 110–181 struck out “for aircraft of a foreign military or air attaché” after “services”.