; (2) temporary exports for convenience or increased efficiency of transportation across parts of an adjacent foreign state which exports reenter the United States; and (3) the historical trading relations of the United States with Canada and Mexico. . (b) Repeal relating to exportation of natural gas Section 3 of the Natural Gas Act ( 15 U.S.C. 717b ) is amended— (1) in subsection (a)— (A) by striking export any natural gas from the United States to a foreign country or ; and (B) by striking exportation or ; and (2) by striking subsection (c).