testifying publicly before congress. it's going to happen next month. i'll talk about how he will likely handle lawmakers' questions with someone who has worked with him closely. also, a new flash point in the immigration debate. a disturbing image of a father and daughter drowned trying to cross the u.s./mexico border. it's sparking new outrage. and we will of course have much more ahead as we count down to tonight's big showdown. something to ponder as we head to break as we take a live look at that debate stage there in miami. since the last debate cycle when donald trump dominated that stage, have moments like to changed our expectations? >> i have a policy question for you, sir. >> let's see if he answers it. >> i will, don't worry about it. don't worry about it. don't worry about it, little marco, i will. >> well, let's hear big donald. >> don't worry about it little marco. >> gentlemen, let's --