Section 249, act Feb. 28, 1925, ch. 368, title III, 310, 43 Stat. 1073, related to promises or pledges by candidates. See section 599 of Title 18, Crimes and Criminal Procedure. Section 250, act Feb. 28, 1925, ch. 368, title III, 311, 43 Stat. 1073, related to expenditures to influence voting. See section 597 of Title 18. Section 251, acts Feb. 28, 1925, ch. 368, title III, 313, 43 Stat. 1074; June 25, 1943, ch. 144, 9, 57 Stat. 167; June 23, 1947, ch. 120, title III, 304, 61 Stat. 159, related to political contributions by national banks, corporations, or labor unions. See section 441b of this title.