Section 2. the Congress and the Several States Shall Have Concurrent

power to enforce this article by appropriate legislation.

Section 3. This article shall be inoperative unless it shall have been ratified as an amendment to the Constitution by the legislatures of the several states, as provided in the Constitution, within seven years from the date of the submission hereof to the states by the Congress.

As the Congress that which had been elected in 1918, the Senate was controlled by the Republicans.