In 1895, invoking the Monroe Doctrine, newly appointed U.S. Secretary of State Richard Olney sent a strongly-worded note to British Prime Minister and Foreign Secretary Lord Salisbury, demanding that the British submit the boundary dispute to arbitration. Salisbury response was that the Monroe Doctrine had no validity as international law. The United States found that response unacceptable and in December 1895, President Grover Cleveland asked Congress for authorization to appoint a boundary commission, proposing that the commission's findings be enforced "by every means." Congress passed the measure unanimously and talk of war with Great Britain began to circulate in the U.S. press.
Great Britain, under pressure in South Africa with the Boers and managing an empire that spanned the globe, could ill afford another conflict. Lord Salisbury's government submitted the dispute to the American boundary commission and said nothing else of the Monroe Doctrine. Venezuela enthusiastically submitted to arbitration, certain that the commission would decide in its favor. However, when the commission finally rendered a decision on October 3, 1899, it directed that the border follow the Schomburgk Line. Although of rejection of Great Britain's increasingly extravagant claims, the ruling preserved the 1835 demarcation. Disappointed the Venezuelans quietly ratified the commission's finding. Of far greater significance, the Anglo-Venezuelan boundary dispute incident asserted for the first time a more outward-looking American foreign policy, particularly in the Western Hemisphere. Internationally the incident marked the United States as a world power and gave notice that under the Monroe Doctrine it would exercise its claimed prerogatives in the Western Hemisphere.