Ad Orientem (to the East): Why There is a Controversy

In Traditionis Custodes Pope Francis implemented restrictions on the Extraordinary Form of the Mass. But did that apply to the Novus Ordo Mass celebrated Ad Orientem? Is this allowed, and if so, is permission needed? What is more traditional, the priest facing toward, or away from, the people? What are the reasons this priestly posture should or should not be done? Hear Fr. Chris Alar explain this in detail and tell why it has been so controversial.