Ok, if you really want to play.
Why is Usury no longer a mortal sin?
“Why is Usury no longer a mortal sin?”
It still is. The issue is what constitutes usury. Most people - especially anti-Catholics - are too stupid to know what is really being condemned: https://www.catholicculture.org/culture/library/view.cfm?recnum=646
http://www.newadvent.org/cathen/15235c.htm
When you read enough on this subject to naturally learn who Conrad Summenhart was, you’ll see your error.