26 U.S.C. § 4373 - U.S. Code - Unannotated Title 26. Internal Revenue Code § 4373. Exemptions

(1) Effectively connected items.--Any amount which is effectively connected with the conduct of a trade or business within the United States unless such amount is exempt from the application of section 882(a) pursuant to a treaty obligation of the United States.

(2) Indemnity bond.--Any indemnity bond required to be filed by any person to secure payment of any pension, allowance, allotment, relief, or insurance by the United States, or to secure a duplicate for, or the payment of, any bond, note, certificate of indebtedness, war-saving certificate, warrant or check, issued by the United States.