What president pro tempore of the US state senate once spoke as a guest host for the Institute of Education?
Institute For Education: The Institute For Education, known as IFE, is an American nonprofit organization headquartered in Washington, DC. Institute For Education:  A selection of guests hosted by the Institute include Hillary Rodham Clinton, John McCain, Antonin Scalia, Orrin Hatch, Ruth Bader Ginsburg and Arianna Huffington.
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