jeff barnes explains. jeff: he came flying out of the gate. >> mexico sends people, they are not sending their best. they are bringing drugs, crime, they're rapists. jeff: it drew backlash and reignited a national debate. >> if it weren't for me you wouldn't be talking about illegal immigration. jeff: trump is backing up tough talk with the specific on immigration. he supports a wall between u.s. and the mexico to be paid for by the mexican government. mandatory deportation of undocumented immigrants, ending automatic u.s. citizenship based on birth. defunding of sanctuary cities. >> we are building a wall, it will be a wall that nobody is going through my wall. >> this is not a negotiation of a real estate deal. that makes no sense. jeff: according to a poll released last week republicans in iowa belief donald trump is the best g.o.p. candidate on illegal immigration, terrorism and not so surprisingly the economy. >> he is a smart businessman. reporter: the overwhelming media coverage good and bad is good

jeff barne takes a look at impact at drop in crude oil prices. jeff: summer drivers are enjoying the lowest gas prices they have seen in years. >> it will be great in terms of cost. it's expensive and the clothes for the kids and evening like that. >> after labor day, people should drive less. gases will drop. by christmas most should be paying less than $2 for gas. trappal-a says the cheap gas is result of the oversupply worldwide. the weak economies in china and russia. both nations scaled back significantly buying crude oil. this while saudi arabia and other major nation producing oil nations are pumping out large quantity of oil to discourage new u.s. field production. >> the world's demand for crowd or the growth in demand soften and not as robust as many hoped. >> if the controversial iranian nuclear deal is approved, experts say iran could add 800,000 extra barrels of crude oil to the global marketplace. all of the factors will help bring down the oil prices. as a result, the consumers will pay less for gasoline in the future. >> according

jeff barnes is live with more on this. the questions get more complicate and the answers seem to be fewer. jeff: absolutely! this is a drip, drip, drip every day. hillary clinton's problems regarding the private server are not going away anytime soon. now there are questions raised to how her server was handled. a lot of the parties say it was questionable. nbc news site and the source saying that someone tried to wipe her server clean. so if question is what does the f.b.i. do next? >> the f.b.i. in particular heavy duty tools. lets them go in and see what used to be on the server. jeff: chris is a special agent for the counterintelligence for ten years at the u.s. military. and tonight at 6:00 we have new polls to show that came out this week and they are not showing mrs. clinton in a favorable light when it comes to favorability or trustworthiness. you will have to see how things will flush out as the days go on as the story doesn't seem to have any ending whatsoever. reporting live from capitol hill, jeff barnes. jonath

>> that is like asking jeff bezos what kind of competitive threat barnes & noble has to them, fundamentallyi look at the landscape in health care in general, the shift to the consumer has not happened fast enough and that is a trend that zocdoc is focused on, and every other industry, we are used to getting things immediately. but yet, we are not getting our doctors immediately and that is what we are hyper focused on solving. insurance companies had their time to solve it, they haven't. zocdoc isn't doing it now. >> ok, cyrus. thank you so much. decides to go public, they could find themselves in a battle for wall street, using real-time data to build and manage trading firms. we sat down with the cofounder to discuss. ♪ >> i think the best way to describe the battle for wall difference is a battle for wall street, you are managing traders and you have to trade real stocks, so real that it is coming into the game. you trade equities, but it also includes commodities and funds. we are going after gamers, and also new traders, ones who want to learn about the market and have a fun way to do