A coalition of Mexicans rose up against Huerta, the largest faction was the "Constitutionalists," who sought the restoration of rule of law under the Mexican Constitution of 1857, led by Governor of Coahuila Venustiano Carranza. Wilson eventually lifted his arms embargo to Mexico, allowing the revolutionaries to better arm themselves. After Huerta arrested U.S. Navy personnel who had accidentally landed in a restricted zone near the northern port town of Tampico, Wilson dispatched the Navy to occupy the Mexican port city of Veracruz. A strong backlash against the U.S. intervention among Mexicans of all political positions brought Mexico and the U.S. to the edge of war. The U.S. agreed to a peace conference, mediated by the ABC Powers (Argentina, Brazil, and Chile) held in Canada to broker a withdrawal. The May 1914 Niagara Falls peace conference ended the impasse. The intervention helped convince Huerta to resign the presidency and go into exile. The revolutionary faction led by Venustiano Carranza established control over a significant proportion of Mexico, but Wilson did not want him to be the victor, and seriously considered backing former Constitutionalist general Pancho Villa, who was inclined to cooperate with the U.S. After considerable calculations, which included the situation in Europe and Germany's apparent attempt to foment war between the U.S. and Mexico, Wilson recognized Carranza's government in October 1915.