16 U.S. Code § 3912 - Transfers to Migratory Bird Conservation Fund
Notwithstanding any other provision of law, an amount equal to the amount of all import duties collected on arms and ammunition, as specified in chapter 93 of the Harmonized Tariff Schedule of the United States, shall, beginning with the next fiscal year quarter after November 10, 1986, be paid quarterly into the migratory bird conservation fund  established under section 718d of this title.
 So in original. Probably should be capitalized.
The Harmonized Tariff Schedule of the United States, referred to in text, is not set out in the Code. See Publication of Harmonized Tariff Schedule note set out under section 1202 of Title 19, Customs Duties.
1988—Pub. L. 100–418 substituted “chapter 93 of the Harmonized Tariff Schedule of the United States” for “subpart A of part 5 of schedule 7 of the Tariff Schedules of the United States”.