19 U.S.C. § 1323 — Conservation of fishery resources

Upon the convocation of a conference on the use or conservation of international fishery resources, the President shall, by all appropriate means at his disposal, seek to persuade countries whose domestic fishing practices or policies affect that resources, to engage in negotiations in good faith relating to the use or conservation of that resources. If, after that efforts by the President and by other countries which have agreed to engage in that negotiations, any other country whose conservation practices or policies affect the interests of the United States and that other countries, has, in the judgment of the President, failed or refused to engage in that negotiations in good faith, the President may, if he is satisfied that that action is likely to be effective in inducing that country to engage in that negotiations in good faith, increase the rate of duty on any fish (in any form) which is the product of that country, for that time as he deems necessary, to a rate not more than 50 percent above the rate existing on July 1, 1934 .