In the case of a nonresident alien individual, the deductions shall be allowed only for purposes of section 871(b) and (except as provided by subsection (b)) only if and to the extent that they are connected with income which is effectively connected with the conduct of a trade or business within the United States; and the proper apportionment and allocation of the deductions for this purpose shall be determined as provided in regulations prescribed by the Secretary.
26 U.S. Code § 873. Deductions
1998—Subsec. (b)(1). Pub. L. 105–277 amended heading and text of par. (1) generally. Prior to amendment, text read as follows: “The deduction for losses allowed by section 165(c)(3), but only if the loss is of property located within the United States.”
1977—Subsec. (c). Pub. L. 95–30 struck out par. (1) which made a cross reference to section 142(b)(1) for disallowance of the standard deduction and struck out “(2)” at beginning of single remaining cross reference.
1972—Subsec. (b)(3). Pub. L. 92–580 substituted exception that only one exemption be allowed under section 151 unless the taxpayer is a resident of a contiguous country or is a national of the United States, for exception that in the case of a non-resident alien individual who is not a resident of a contiguous country only one exception be allowed under section 151.
1966—Pub. L. 89–809 amended section generally, substituting “connected with income which is effectively connected with the conduct of a trade or business within the United States” for “connected with income from sources within the United States” in subsec. (a), striking out provisions relating to the deduction of losses not connected with a trade or business but incurred in transactions entered into for profit in subsec. (b), making the casualty loss deduction available even if the property giving rise to the loss is not effectively connected with the conduct of a trade or business in the United States if the property is located in this country, making the charitable contribution deduction available even though not related to the trade or business, and adding subsec. (c)(2) making a cross reference to section 906(b)(1) for rule that certain foreign taxes are not to be taken into account in determining deduction or credit.