1. Peter Rouse was born April 15, 1946, in New Haven, Conn., to Benjamin Irving and Mary Mikami Rouse. His father was an anthropology professor at Yale and his mother, the daughter of Japanese immigrants, taught at Yale's Institute for Oriental Languages.
2. Rouse earned a B.A. in history from Colby College in 1968, an M.A. from the London School of Economics in 1970, and an MPA from Harvard University's John F. Kennedy School of Government in 1977.
3. He met future Sen. Tom Daschle in 1973 when both worked as legislative aides to former Sen. James Abourezk of South Dakota.
4. From 1979 to 1983, Rouse was chief of staff to Alaska Lt. Gov. Terry Miller, the only Republican politician he has ever worked for.
5. In 1984, Rouse became chief of staff to Illinois's Dick Durbin, who had recently been elected to the U.S. House of Representatives.
6. After his friend Daschle was elected to the Senate in 1986, Rouse served as his chief of staff for 19 years, through Daschle's terms as minority and majority leader.
7. When Daschle lost his seat in 2004, Rouse considered retirement, but Sen.-elect Barack Obama persuaded him to be his chief of staff.
8. Rouse has been called "the 101st senator" because of his influential decades working on Capitol Hill.
9. He advised Obama's 2008 presidential campaign, became co-chair of Obama's transition team, and settled in as a senior adviser to the president, a role that earned him the nickname "The Fixer."
10. Unlike Rahm Emanuel, Rouse keeps a famously low profile. He lives alone with two Maine coon cats.