On this edition for Saturday, Dec. 15, President Trump announces that Ryan Zinke is leaving his post as secretary of the interior by the end of the year, and a Texas judge rules that the Affordable Care Act's individual mandate is unconstitutional. Also, musician Nils Lofgren has been performing for 50 years, and a look at unconventional punk rockers. Hari Sreenivasan anchors from New York.
