>> mike we'll leave your question stand and move on to david in ardsley, new york. republican line. go ahead, david. >> caller: hi. i'd like to talk about immigration. there's been a lot of attention from -- because of donald trump's statements, the republican party about immigration. now there's talk about ending birth right citizenship, which you just talked about. i'd just like to say that it's pretty clear reading of the constitution that as long as somebody is -- sorry, i have a cold -- is under the jurisdiction of narea and is born in the united states, they are and given that donald trump's proposals and those of other republicans would -- would harm the economy, as a conservative, i have to question how beneficial a supposedly strong immigration policy would be to the american economy. >> and what's the answer to the question? what's your answer to the question you're raising? >> caller: i'd like to ask if you know of any -- any statistics on the effects that a mass deportation or the building of a border wall would have on the u.s. economy? >> do you know any statistics? >>