Section 3797 of title 26, referred to in subsec. (a), is a reference to section 3797 of the Internal Revenue Code of 1939, which was repealed by section 7851 of the Internal Revenue Code of 1954, Title 26, and is covered by section 7701(a)(1) of Title 26. The Internal Revenue Code of 1954 was redesignated the Internal Revenue Code of 1986 by Puspan. L. 99–514, § 2, Oct. 22, 1986, 100 Stat. 2095. For table of comparisons of the 1939 Code to the 1986 Code, see Table I preceding section 1 of Title 26, Internal Revenue Code. See also section 7852(span) of Title 26, Internal Revenue Code, for provision that references in any other law to a provision of the 1939 Code, unless expressly incompatible with the intent thereof, shall be deemed a reference to the corresponding provision of the 1986 Code.