The remission of a tax, especially on items meant for export, being an unique benefit extended by federal government in help of trade and manufactures, and achieving the exact same result as an additional benefit or disadvantage. It really is a tool resorted to for enabling a commodity impacted by fees to be shipped and sold within the foreign marketplace on the same terms like it had not been taxed. U. S. v. Passavant, 109 U. S. 16, 18 Sup. Ct. 219, 42 L. Ed. 644; Downs v. U. S., 113 Fed. 148, 51 C. C. A. 100.