President Roosevelt handled the matter in his messages of 1903 and 1904. "That our rights and interests are deeply concerned in the maintenance of the [Monroe] Doctrine is so clear as hardly to need argument. This is especially true in view of the construction of the Panama Canal. As a mere matter of self defense we must exercise a close watch over the approaches to this canal, and this means we must be thoroughly alive to our interests in the Caribbean Sea." "When we announce a policy... we thereby commit ourselves to the consequences of the policy." "Chronic wrongdoing or an impotence which results in a general loosening of the ties of civilized society, may in America, as elsewhere, ultimately require intervention by some civilized nation, and in the Western Hemisphere the adherence of the United States to the Monroe Doctrine may force the United States, however reluctantly, in flagrant cases of such wrongdoing or impotence, to the exercise of an international police power." To prevent European intervention for the purpose of securing just claims in America, then, the United States would undertake to handle the case, and would wield the "Big Stick" against any American state which should refuse to meet its obligations. This was a repetition, in a different tone, of Blaine's "Elder Sister" program. As developed, it had elements also of Cleveland's Venezuela policy. In 1907 the United States submitted to the Hague Conference a modified form of the Drago doctrine, which stated that the use of force to collect contract debts claimed from one government by another as being due to its citizens should be regarded as illegal, unless the creditor nation first offered to submit its claims to arbitration and this offer were refused by the nation against which the claim was directed. The interference of the United States, therefore, would be practically to hale the debtor into court.