The deeper Pershing and the US Army went into Mexico chasing Pancho Villa the longer the threat of war with Mexico grew
Even with 15,000 men Pershing never caught Villa and President Woodrow Wilson withdrew the troops in January of 1917
Under Venustiano Carranza’s new government in Mexico a new Mexican Constitution was put into effect February 5, 1917
By 1917 the War in Europe (The Great War) was growing larger and larger. Wilson realized the need to avoid war with Mexico as well as the impending need to conserve the U.S. Military and John J. Pershing for the overwhelming possibility of sending our troops to Europe.