Charles Graves Untermeyer, known as Chase Untermeyer, is a former United States ambassador to Qatar. He was given a recess appointment by U.S. President George W. Bush and assumed the position on August 2, 2004. After three years, he was succeeded by Joseph LeBaron.

Robert Holmes Tuttle is a businessman specializing in car dealerships. He was the United States Ambassador to the United Kingdom from July 2005 to February 2009.