Hugh Hewitt; New Hampshire Primary Preview; Peter Bergen

Radio host Hugh Hewitt shares his thoughts on the Republican presidential campaigns heading into the New Hampshire primary. Robert Costa, Stuart Stevens, Patrick Healy, and Jonathan Alter talk about the presidential election, on the eve of the New Hampshire primary. Peter Bergen, vice president of the think tank New America, shares his new book, “United States of Jihad: Investigating America’s Homegrown Terrorists.”