Schieffer joined CBS News in 1969 and in that span he covered the White House, State Department, Pentagon, Capitol Hill, anchored the "CBS Evening News," and hosted "Face the Nation" the past 24 years.

Washington has changed dramatically when he began covering the nation's capital. Schieffer told "CBS This Morning" on Friday that the "revolution in communications" has turned D.C. "upside-down."

"We now don't know where people get their news, but what we do know is they're bombarded with information 24 hours a day, seven days a week. Most of the information is wrong and some of it is wrong on purpose," Schieffer said. "It is our job, I think, in mainstream journalism to try to cut through this mall of information and tell people what we think is relevant in what they need to know. That is the job of the journalist and I have to say it's harder and harder."