26 U.S.C. § 1037: Certain exchanges of United States obligations

When so provided by regulations promulgated by the Secretary in connection with the issue of obligations of the United States, no gain or loss shall be recognized on the surrender to the United States of obligations of the United States issued under chapter 31 of title 31 in exchange solely for other obligations issued under such chapter. the aggregate amount considered, with respect to the obligation surrendered, as ordinary income shall not exceed the difference between the issue price and the stated redemption price which applies at the time of the exchange, and the issue price of the obligation received in the exchange shall be considered to be the stated redemption price of the obligation surrendered in the exchange, increased by the amount of other consideration (if any) paid to the United States as a part of the exchange. In any case in which subsection (a) (or so much of section 1031(b) or (c) as relates to subsection (a) of this section) has applied to the exchange of a transferable obligation which was issued at not less than par for another transferable obligation, the issue price of the obligation received from the Government in the exchange shall be considered for purposes of applying subpart A of part V of subchapter P to be the same as the issue price of the obligation surrendered to the Government in the exchange, increased by the amount of other consideration (if any) paid to the United States as a part of the exchange. For rules relating to the recognition of gain or loss in a case where subsection (a) would apply except for the fact that the exchange was not made solely for other obligations of the United States, see subsections (b) and (c) of section 1031. For rules relating to the basis of obligations of the United States acquired in an exchange for other obligations described in subsection (a), see subsection (d) of section 1031.