Washington, D.C. -- CBS News broadcasts from Washington, D.C. on Inauguration Day, January 20, 2017. Photo credit: Michele Crowe/CBS ©2017 CBS Broadcasting Inc. All Rights Reserved. NO SALES, NO ARCHIVING

Washington, D.C. -- CBS News broadcasts from Washington, D.C. on Inauguration Day, January 20, 2017. Photo credit: Michele Crowe/CBS ©2017 CBS Broadcasting Inc. All Rights Reserved. NO SALES, NO ARCHIVING

CBS News Campaign 2016; Vice Presidential Debate between Democrat Tim Kaine and Republican Mike Pence at Longwood University. CBSN Anchor Elaine Quijano moderates the vice presidential debate on Oct. 4, 2016 Photo: John PaulFilo/CBS ©2016 CBS Broadcasting Inc. All Rights Reserved

CBS EVENING NEWS Anchor and Managing Editor Scott Pelley and FACE THE NATION Anchor and CBS News Political Director John Dickerson broadcast live from Hofstra University for the first presidential debate on Sept. 26, 2016. Photo: Michele Crowe/CBS © 2016 CBS Television Network. All Rights Reserved.

CBS News Campaign 2016; Vice Presidential Debate between Democrat Tim Kaine and Republican Mike Pence at Longwood University. Major Garrett, reports for the CBS Evening News on the debate moderated by Elaine Quijano of CBS News. Photo: John PaulFilo/CBS ©2016 CBS Broadcasting Inc. All Rights Reserved

CBS EVENING NEWS Anchor and Managing Editor Scott Pelley, FACE THE NATION Anchor and CBS News Political Director John Dickerson and CBS News Contributor Bob Schieffer anchor CBS News' live coverage of the first presidential debate at Hofstra University on Sept. 26. Photo: Michele Crowe/CBS © 2016 CBS Television Network. All Rights Reserved.