Comparing the national interests at stake, the United States interest in enforcing antitrust laws through private civil actions is one of fundamental importance to this country's effort to encourage and maintain a competitive economy. See, e.g.,
Mitsubishi Motors Corp. v. Soler ChryslerPlymouth, Inc., 473 U.S. 614, 634–35, 105 S.Ct. 3346, 87 L.Ed.2d 444 (1985); Hawaii v. Standard Oil Co. Of Cal., 405 U.S. 251, 262, 92 S.Ct. 885, 31 L.Ed.2d 184 (1972). The South African interest in enforcing the blocking statute at issue here, on the other hand, is entitled to less deference since it is not a substantive rule of law at variance with the law of the United States, but rather one whose primary purpose is to protect its citizens from discovery obligations in foreign courts. See, e.g., Société
Nationale Industrielle Aérospatiale v. U.S. Dist. Court for the S. Dist. of Iowa, 482 U.S. 522, 544 n. 29, 107 S.Ct. 2542, 96 L.Ed.2d 461 (1987) (citing Restatement
§ 437, Reporter's Note 5, pp. 41, 42).