Police shooting in chicago. The officer who fired the fatal shot was wearing a body camera, but it was not recording. Investigators are trying to figure out why. Good morning from copacabana beach. Got to go to the Opening Ceremony last night. Still pinching myself that tifs there. Only got three hours of sleep, but i woke up still doing the samba. Were going to talk about it and show you some of the highlights, coming up. Only coy wakes up doing the samba. Well, it is 9 00 on a saturday. And we are always so grateful to share our morning with you. Im christi paul. Im victor blackwell. Good to be with you, now in the cnn newsroom. And donald trump walking back his comments on paul ryan. Now endorsing the house speaker. Hes also endorsing, by the way, senators john mccain, kelly ayotte. This comes after a week of trump going offmessage, criticizing gop leaders, and enflaming a muslim gold star family. I want to bring in cnns Scott Mcclain right now. Scott, fill us in on what donald trum