Prompted by an international tribunal's decision last year ordering new hearings for 51 Mexicans on death rows in the United States, the State Department said yesterday that the United States had withdrawn from the protocol that gave the tribunal jurisdiction to hear such disputes. The withdrawal followed a Feb. 28 memorandum from President Bush to Attorney General Alberto R. Gonzales directing state courts to abide by the decision of the tribunal, the International Court of Justice in The Hague. The decision required American courts to grant "review and reconsideration" to claims that the inmates' cases had been hurt by the...