On today's episode: The Second Amendment. For ages, the right to bear arms was among the least controversial amendments in the U.S. Constitution. Today,  it's among the most divisive issues in American politics. What were the Founders hoping to achieve in ratifying The Second Amendment?  When did the U.S. start regulating guns? What qualifies as arms? We'll seek out constitutional consensus on a topic where common ground is hard to find. Our guest is Jeffrey Rosen, CEO and President of the National Constitution Center, and host of We the People.