She appeared on the show to plug her book, Saving Graces, and to discuss her push for universal health care.
"You are an advocate of universal health care," Colbert said. "Why do you want to turn the United States into Canada? Why not just move there?"
Edwards explained that she's an advocate for health care for everyone, not socialized medicine.
"We already have a form of universal health care. It's called prayer, okay?" Colbert said. "Everybody can do it and the Lord of the universe hears all prayers, but sometimes the answer is, 'I'm sorry, you're not covered for that.'"
Edwards shot back: "A little too often, it's you're not covered for that."