Fox News on-air talent, eat your heart out - that is, when it comes to Mika Brzezinski's ideal conservative. Brzezinski appeared at Politics & Prose bookstore in Washington, D.C. on Jan. 13 to promote her new book, "All Things at Once" along with her MSNBC "Morning Joe" co-host and author of "The Last Best Hope: Restoring Conservatism and America's Promise," Joe Scarborough. Brzezinski was asked by a member of the audience why she is sometimes reluctant to be more vocal with her ideologically liberal views on their show. She explained that wasn't necessarily her role. ...more (w/video)...