According to professor Corey Brettschneider, author of "The Presidents and the People," the following presidents in history threatened democracy: "John Adams waged war on the national press…prosecuting as many as 126 people who dared criticize him…James Buchanan colluded with the Supreme Court to...

Peggy Noonan, Pulitzer Prize-winning columnist for the Wall Street Journal and former speechwriter for President Reagan, discusses her book "A Certain Idea of America," a collection of her columns from over the past quarter century. She also talks about her time working in the White House and her...