Leave your feedback Share Copy URL https://www.pbs.org/newshour/show/shields-and-brooks-on-rick-santorum-s-future-belmont-stakes Email Facebook Twitter LinkedIn Pinterest Tumblr Share on Facebook Share on Twitter Story In this week’s Doubleheader, Mark Shields and David Brooks agree on one thing — former Sen. Rick Santorum will not be on a short list (or long list) to join Mitt Romney’s ticket.