Senator John McCain; Russian Hacking; Major Garrett; Philip Rucker; Nancy Gibbs

Senator John McCain discusses today's announcement that the Senate Armed Services Committee will focus heavily on cybersecurity. Journalists David Sanger and Michael Isikoff discuss election-related hacking from Russia. Major Garrett of CBS News reports on the latest picks for President-elect Trump's cabinet; continuing the conversation with Philip Rucker of The Washington Post. Nancy Gibbs, managing editor of Time magazine, on the selection of Donald Trump as the publication's "Person of the Year."