Why did Woodrow Wilson back carranza against villa?

Woodrow Wilson backed Venustiano Carranza against Pancho Villa during the Mexican Revolution primarily to support a stable and constitutional government in Mexico. Wilson believed that Carranza, as a leader of the constitutionalist faction, would promote democratic ideals and reform, contrasting with Villa's more revolutionary and often violent tactics. Additionally, Wilson's administration sought to protect American interests and ensure a stable border, which Carranza was more likely to uphold compared to Villa's unpredictable actions.