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.”

1984—Subsec. (b)(1). Pub. L. 98–369 substituted “for losses” for “, for losses of property not connected with the trade or business if arising from certain casualties or theft,”.

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.

1976—Subsec. (a). Pub. L. 94–455 struck out “or his delegate” after “Secretary”.

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.

Amendment by Pub. L. 105–277 applicable to taxable years beginning after Dec. 31, 1983, see section 4004(c)(1) of Pub. L. 105–277, set out as a note under section 172 of this title.

Amendment by Pub. L. 98–369 applicable to taxable years beginning after Dec. 31, 1983, see section 711(c)(2)(A)(v) of Pub. L. 98–369, set out as a note under section 165 of this title.

Amendment by Pub. L. 95–30 applicable to taxable years beginning after Dec. 31, 1976, see section 106(a) of Pub. L. 95–30, set out as a note under section 1 of this title.

Amendment by Pub. L. 92–580 applicable to taxable years beginning after Dec. 31, 1971, see section 1(c) of Pub. L. 92–580, set out as a note under section 152 of this title.

Amendment by Pub. L. 89–809 applicable with respect to taxable years beginning after Dec. 31, 1966, see section 103(n)(1) of Pub. L. 89–809, set out as a note under section 871 of this title.