We are waiting for Donald Trump`s big immigration speech. There are lots of unanswered questions that remain about where exactly Trump stands on deportation forces, on what to do with the millions of immigrants who are here illegally now, and where he stands on the question of birthright citizenship.

There was a change in tone in terms of the [Donald] Trump who showed up in Mexico City for this press conference.

If you look at the Bernie Sanders of today and you look at the Bernie Sanders of a year ago [2015], when this started, he`s come a long way in terms of.This was a guy at the start of the campaign who had contempt for any personal questions.

We played all that rhetoric, all of the thing - the provocative inflammatory things [Donald Trump] said over the last year, does that all add up to buying him enough wiggle room with his base that he can get out and change his position like that?

When Donald Trump had all of his opponents, when he had critics in his party saying what you`re calling for in terms of deportation of all 11 million is not practical, it`s not plausible, some were saying it is not moral, why wouldn`t he make argument then?

Here`s an interesting twist, though, President Pena Nieto later tweeting that he told [Donald] Trump in their private meeting that Mexico will not pay for the proposed border wall, Trump saying, though, in that press conference that it didn`t come up.

Like the kind of voter who has been turned off to [Donald] Trump, who would normally vote Republican in an election like this, that`s who we`re talking about, can they get past - even if he comes to a position that`s more agreeable for them, a tone that`s more agreeable, can they get past the last year?