itself is not building these l with a -- walls. they're supervising construction by private companies. the chief when he was out here with me a couple weeks ago said they don't need a wall along the southern border, because of the topography, the manpower and technology. that thing right there, ali, is obviously a tower that's got all kinds of visual sensors. stadium lighting out here. they've been able to do with the resources they have right now an amazing job in terms of keeping apprehensions low and, frankly, keeping people on this side of the border. >> the border wall is a promise, jacob, and that's why you're standing there. good to see you, as always. thanks very much. tijuana, mexico. special counsel robert mueller is investigating a democrat, how podesta's work may be tied to paul manafort. that's next. first, in light of the ongoing fight against confederate monuments in this country, we want to introduce you to monumental americans who