Scoop: 60 MINUTES on CBS - Sunday, May 21, 2017

Scoop: 60 MINUTES on CBS - Sunday, May 21, 201760 MINUTES, the most successful television broadcast in history, began its 49th season in September 2016. Offering hard-hitting investigative reports, interviews, feature segments and profiles of people in the news, the broadcast begun in 1968 is still a hit in 2016, making Nielsen's Top 10 nearly every week. Over the 2015-2016 season, 60 MINUTES continued its dominance as the number-one news program, drawing an average of 12.3 million viewers per week - almost twice the audience of its nearest network news magazine competitor and three million viewers ahead of the most-watched daily network evening news broadcast.

The average audience for a 60 MINUTES broadcast still dwarfs the biggest audiences drawn by cable news programs.

Listings for 60 MINUTES on Sunday, May 21st:

7:00-8:00 PM, ET/PT

SANCTUARY - Scott Pelley reports on so called "sanctuary cities," where authorities have openly defied tough, new immigrant policies and religious leaders are offering their churches to illegal immigrants for sanctuary. Michael Rey and Oriana Zill de Granados are the producers.

COOK COUNTY JAIL - Cook County Sheriff Tom Dart runs one of the largest jails in the country, located in Chicago, where the murder rate is the highest. But it's his unconventional and controversial style that puts him in the spotlight. Lesley Stahl reports. Deirdre Cohen is the producer.

ENEMY OF THE STATE -- Ai Weiwei's provocative art has gotten him harassed by police, thrown in detention and driven out of China. But in order to be relevant, he must be political, he tells Holly Williams. Michael Gavshon and David M. Levine are the producers.

8:00-9:00 PM, ET/PT

OPERATION CAR WASH - The clues began at a gas station, beginning a massive corruption scandal, involving BILLIONS in bribes and scores of politicians, that is making heroes out of a busy group of prosecutors and a brave Brazilian judge. Anderson Cooper reports from Brazil. Andy Court is the producer.

SNITCHES - Controversial and sometimes illegal, the use of jailhouse informants in Orange County, Calif., has drawn the scrutiny of federal and state authorities. Sharyn Alfonsi talks to a "snitch" and to the D.A. who has used them. Howard L. Rosenberg is the producer.

SPACE ARCHEOLOGY - Locating archeological sites for excavation can be a time-consuming and sometimes futile endeavor. But Sarah Parcak uses a new method that utilizes satellite imagery to find ancient sites that can't be easily found on the ground. Bill Whitaker reports from Egypt. David Schneider and Joyce Gesundheit are the producers.