But the conference arranged for this purpose at Niagara Falls, Canada, had before it a task altogether impossible of accomplishment.

Though Carranza was willing to have the Constitutionalists represented, if the discussion related solely to the immediate issue between the United States and Huerta, he declined to extend the scope of the conference so as to admit the right of the United States to interfere in the internal affairs of Mexico.

The conference accomplished nothing so far as the immediate issue was concerned.

The dictator did not make reparation for the "affronts and indignities" he had committed; but his day was over.
The advance of the Constitutionalists southward compelled him in July to abandon the capital and leave the country.

Four months later the American forces were withdrawn from Vera Cruz.