Sec. 3111. Rate of tax. 3112. Instrumentalities of the United States. [3113. Repealed.] AMENDMENTS 1976 - Pub. L. 94-455, title XIX, Sec. 1903(b), Oct. 4, 1976, 90 Stat. 1810, struck out item 3113 "District of Columbia credit unions". 1956 - Act Aug. 1, 1956, ch. 836, title II, Sec. 201(a)(2), 70 Stat. 839, added item 3113.