((a)) ** Stock in corporation** For purposes of this subchapter shares of stock owned and held by a nonresident not a citizen of the United States shall be deemed property within the United States only if issued by a domestic corporation.

((b)) ** Revocable transfers and transfers within 3 years of death** For purposes of this subchapter, any property of which the decedent has made a transfer, by trust or otherwise, within the meaning of sections 2035 to 2038, inclusive, shall be deemed to be situated in the United States, if so situated either at the time of the transfer or at the time of the decedent’s death.

((c)) ** Debt obligations** For purposes of this subchapter, debt obligations of—

((1)) a United States person, or

((2)) the United States, a State or any political subdivision thereof, or the District of Columbia,