For purposes of this chapter—
((1)) Repealed. , , .
((2)) The term “duty or other import restriction” includes (A) the rate and form of an import duty, and (B) a limitation, prohibition, charge, and exaction other than duty, imposed on importation or imposed for the regulation of imports.
((3)) to (5) Repealed. , , .
((6)) The term “modification”, as applied to any duty or other import restriction, includes the elimination of any duty.