Bob Schieffer

As CBS News Chief Washington Correspondent Bob Schieffer begins his 21st year hosting "Face the Nation," here's a look back at some of his interviews over the last 20 years.

Bob Schieffer interviews President Bill Clinton on "Face the Nation."

Appearing on "Face the Nation" on May 5, 1991 (from left): Alan Murray; Bob Schieffer; David N. McCammon, Vice President of Ford Motor Co.; Chairman Michael J. Boskin, Council of Economic Advisors; and Allen Sinai, Chief Economist Boston Co.

Bob Schieffer interviews White House Chief of Staff Bill Daley.

Bob Schieffer interviews George Stephanopoulos, Bill Clinton's Communication Director, on January 17, 1993.

Bob Schieffer talks with House Minority Whip Steny Hoyer in 2011.

Appearing on "Face the Nation" on May 12, 1991 (from left): John Walcott, Bob Schieffer, Rep. Dave McCurdy (D-Okla.) and Juan Williams, Washington Post

Appearing on "Face the Nation" on August 14, 1994 (from left): John Breaux (D-La.); Leon Panetta, White House Chief of Staff; Bob Schieffer and David L. Boren (D-Okla.)

Bob Schieffer hosts a roundtable on "Face the Nation" with CBS News correspondents in 2010.

Bob Schieffer interviews Sen. Scott Brown (R-Mass.) in 2010.

Bob Schieffer on "Face The Nation" in 1992.

Bob Schieffer with Sen. Lindsey Graham (R-S.C.).

Bob Schieffer interviews Sen. John McCain (R-Ariz.) in 2011.