As James Madison noted in 1822: "Knowledge will forever govern ignorance: And a people who mean to be their own Governors, must arm themselves with the power which knowledge gives."

So it's pretty obvious why we’ve interviewed best-selling author James Loewen several times. This time, we’re talking about the re-issue of his most famous book, in which he tells us “Everything Your American History Textbook Got Wrong.”

The Goldwater Rule prohibits psychiatrists and psychologists from diagnosing anyone unless they have examined the patient personally.

But some health care professionals insist that another ethical concept trumps the Goldwater Rule: the duty to warn others if a patient is a threat.

The “patient” in question is Donald Trump, and these professionals have decided to warn the world that he is dangerously mentally ill. They’ve even written a book: Rocket Man: Nuclear Madness and the Mind of Donald Trump.

We hear from both sides on this contentious issue: Dr. Charles Dike of Yale, who defends the Goldwater Rule, and Dr. John Gartner, who taught for many years at Johns Hopkins, and who is one of the founders of the group Duty to Warn.

LMU Law School's Professor William Gill continues his update of immigration issues, telling us about his own experiences representing migrants caught up in ICE raids in Morristown, Tennessee.

Constitutional scholar Linda Monk has published an updated edition of a book that provides a concise history and overview of some of the most important and cherished of our constitutional rights, including stories of ordinary people who brought those rights to life.

Join us for some constitutional inspiration.

Immigration is much in the news (and in the courts) this year. Indeed, there is so much to discuss that we're devoting two episodes to our annual update.

In Part One, Stewart speaks with Professor William Gill of Lincoln Memorial University’s law school about the recent Supreme Court decision upholding the Muslim Ban. They also discuss the separation of migrant families at the U.S. border.

Most of us focus so much upon the U.S. Constitution and the U.S. Supreme Court that we sometimes forget that there is more than one constitution in the United States. There are fifty-one constitutions, to be precise, one for the national government, and one for each of the fifty state governments.

Jeffrey Sutton, a federal appellate judge, has written a timely new book reminding us of the importance of those fifty state constitutions, and of the state courts that interpret them.

Doug McKechnie, who teaches constitutional law at the United States Air Force Academy, has just written a law review article in which he neither praises nor condemns Donald Trump's tweets. Instead, he suggests that, love 'em or hate 'em, those tweets have small-d democratic value.

Lacy Ward, Jr., of the John Marshal Foundation, tells us about Barbara Johns, a sixteen-year-old girl who, in 1951, led a student walkout to protest her separate, and very unequal, public high school in Prince Edward County, Virgina.

After leading the walkout, Barbara Johns contacted the NAACP, which took her case all the way to the Supreme Court, where it eventually became part of Brown v. Board of Education.

Virginia has now designated April 23 as Barbara Johns Day.

Join us for a fascinating, inspiring, and poignant tale about a woman who really does deserve her own day.

Matt Reeves, Montpelier’s Director of Archaeology & Landscape Restoration, tells us how he is using a new technology, Light Detection And Ranging, or LIDAR, to peer beneath the forest canopy and find traces of the past that have been hidden for centuries.

After we finish with Matt, we’ll talk about a controversy over California’s ban on small, “battery” cages for chickens, and how that ban affects interstate commerce -- and how Congress may soon respond. Our guests are Dave Duquette, the National Strategic Planner for Protect the Harvest, and Bob Martin, the Director of Food System Policy at the Johns Hopkins Center for a Livable Future.

Professors William Walton and Tony Storey of the University of Northumbria recently brought some of their British and European law students to Montpelier.

After a tour and a discussion of the First Amendment, Stewart invited the students into the Potter Family Studios to ask them about their impressions of the United States and its Constitution. Stories, insights, and a bit of hilarity ensued.