along the southern border. >> reporter: his mexican-funded border wall? "unlikely." part of the problem -- the cost. estimates range from $8 billion to $122 billion. and while he says mexico would pay, that country's foreign minister saying yesterday, that's not happening. also unlikely, another campaign pledge. >> donald j. trump is calling for a total and complete shutdown of muslims entering the united states. >> rte proposed muslim ban, unpopular, even among many republicans. candidate trump already signaling he won't take such a ha hardline stance. >> reporter: expect for the president-elect trade to be another issue in those first 100 days. he doesn't always see eye to eye with the rest of his party on that. that's a topic that may or may not come up with president-elect trump and vice president-elect mike pence visit house speaker house this morning, thank you. >>> let's bring in nicolle wallace and steve kornacki who at this point need no introducti introduction. nicolle, you've been there. what are these meetings about? the white house is this scene, this is