[162] Blaine, venturing a greater involvement in affairs south of the Rio Grande, proposed a Pan-American conference in 1882 to discuss trade and an end to the War of the Pacific being fought by Bolivia, Chile, and Peru.[162] Blaine did not remain in office long enough to see the effort through, and when Frederick T. Frelinghuysen replaced him at the end of 1881, the conference efforts lapsed.[163] Frelinghuysen also discontinued Blaine's peace efforts in the War of the Pacific, fearing that the United States might be drawn into the conflict.[163] Arthur and Frelinghuysen continued Blaine's efforts to encourage trade among the nations of the Western Hemisphere; a treaty with Mexico providing for reciprocal tariff reductions was signed in 1882 and approved by the Senate in 1884.[164] Legislation required to bring the treaty into force failed in the House, however, rendering it a dead letter.[164] Similar efforts at reciprocal trade treaties with Santo Domingo and Spain's American colonies were defeated by February 1885, and an existing reciprocity treaty with the Kingdom of Hawaii was allowed to lapse.