マルコ・ルビオが国務長官に就任したのは... ？

This market will resolve to “Yes” if Marco Rubio ceases to be U.S. Secretary of State for any period of time between market creation and the specified date, 11:59 PM ET. Otherwise, this market will resolve to “No”. An announcement of Marco Rubio's resignation/removal by this market's end date will immediately resolve this market to "Yes", regardless of when the announced resignation/removal goes into effect. The resolution source for this market will be official information from Marco Rubio and the U.S. government; however, a consensus of credible reporting may also be used.