In this wide-ranging conversation, we talked to our dear friend Fred Guttenberg about his activism, his new book, his past experience with the outgoing Trump administration, and the advice Joe Biden gave him after Parkland.

With Senate Majority Leader Mitch McConnell jamming through the nomination of Amy Coney Barrett to the Supreme Court, we wanted to understand how a decidedly conservative Justice could shape the interpretation of the Second Amendment. We were joined by...