from last hour. this is deliberate military strikes. you can't do what you did a year ago. if you'll be effective you have to eliminate assad's ability to carry out another chemical weapons attack. how do you do that? massive and complicated. not easy decisions for the commander-in-chief. >> sandra: timing is so important. we'll see. >> bill: other big stories. president trump says illegal immigrants will be stopped at the u.s. border. >> president trump: we're beefing up the border patrol who have done a fantastic job. ice has done a fantastic job and we will take care of that situation. >> bill: so the first national guard troops arriving. more are on the way. we'll talk more about customs and border protection next. >> sandra: mark zuckerberg already apologizing for the massive privacy scandal at facebook. what will come out of this senate hearing today? >> bill: also former a.g.