Brian, Bishop Barron is saying exactly what those defending Francis are saying. That mercy does not discount the sin. Pope Francis once said he sees the people he is aiming at as spiritually wounded on the battle field. He said you don't ask someone bleeding to death if he or she is taking his or her vitamins. You stop the bleeding first, then later you can teach them about vitamins and healthy lifestyle. In other words, reach out to sinners first in order to extend mercy, hopefully convert them and then teach them all the church's teachings. We will never convert sinners if we don't reach out to them in their immediate pain and need first.