RATIFICATION OF TREATIES. The constitution of the United States, art. 2, s. 2, declares that the president shall have power, by and with the advice and consent of the senate, to make treaties, provided two-thirds of the senators present concur. 2. So treaty is therefore of any validity to bind the nation unless it has been ratified by two-thirds of the members present in the senate at the time its expediency or propriety may have been discussed. Vide Treaty.