1976—Subsec. (a)(1). Pub. L. 94–455, § 2001(c)(1)(K)(i), substituted “during the 3-year period ending on the date of the decedent’s death” for “in contemplation of decedent’s death”.

Subsec. (a)(2). Pub. L. 94–455, § 2001(c)(1)(K)(ii), substituted “during the 3-year period ending on the date of the decedent’s death” for “in contemplation of his death”.

Subsec. (c). Pub. L. 94–455, § 1902(a)(3), struck out subsec. (c) which covered the effect of a disability in certain cases by relating a mental disability to relinquish a power to a power, the relinquishment of which would be deemed not to be a transfer for purposes of chapter 4 of the Internal Revenue Code of 1939.

1962—Subsec. (a). Pub. L. 87–834 struck out provisions which excepted real property situated outside of the United States.

1959—Subsec. (c). Pub. L. 86–141 added subsec. (c).

Amendment by section 1902(a)(3) of Pub. L. 94–455 applicable to estates of decedents dying after Oct. 4, 1976, see section 1902(c)(1) of Pub. L. 94–455, set out as a note under section 2012 of this title.

Amendment by section 2001(c)(1)(K)(i), (ii) of Pub. L. 94–455 applicable to estates of decedents dying after Dec. 31, 1976 but not to transfers made before Jan. 1, 1977, see section 2001(d)(1) of Pub. L. 94–455, set out as a note under section 2001 of this title.

Amendment by Pub. L. 87–834 applicable to estates of decedents dying after Oct. 16, 1962, except as otherwise provided, see section 18(b) of Pub. L. 87–834, set out as a note under section 2031 of this title.

Pub. L. 86–141, § 2, Aug. 7, 1959, 73 Stat. 289, provided that: “The amendment made by the first section of this Act [amending this section] shall apply only with respect to estates of decedents dying after August 16, 1954. No interest shall be allowed or paid on any overpayment resulting from the application of the amendment made by the first section of this Act with respect to any payment made before the date of the enactment of this Act [Aug. 7, 1959].”