On the campaign trail, [Donald] Trump has threatened a trade war and repeatedly said that Mexico will pay for a wall on the Southern border.

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.

Donald Trump, I guess one idea here if he`s flip flopping, has he bought himself cover with his base by all the inflammatory thing he`s said over the last year? But the flip side is, all of those inflammatory things, the voters he`s trying to reach by flip flopping, are they tuned out to him because of that?

Chris Christie's rise in politics in New Jersey, in many ways, was built on his takedown of Charles Kushner. He got national headlines for that prosecution.

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.

The perception that Donald Trump has softened on immigration or is about to soften on immigration has some on the right concerned that he could lose support among his most loyal base of supporters, though he`d been drawn to his hard-line positions on immigration early in the campaign.

Bernie Sanders is usually speaking to the converted. He fires them up. It`s a completely different style of campaigning that he`s allergic to.