republicans in congress have suggested they want to do. and as donald trump suggested he wanted to do, particularly on the last -- in the last few weeks of the campaign. we have a piece up on "the washington post" right now, that says, here's why trump is starting to waffle on obamacare. it's by harvard economist, david cutler. and he explains in detail exactly why it's difficult to withdraw the affordable care act, without creating problems down straep, in terms of how you keep people covered. trump is offering things like tax subsidies, but those don't always help people at the lower end of the income scale. trump has said, as many republicans have said, that he wants to get rid of the lines around the state borders, and allow insurers to sell across state lines. but that presents its own problems, as well. obamacare was not a perfect law, but it is going to be harder to repeal and replace, i think, than it was billed -- >> so we have obamacare. let's talk about the wall, real quickly. newt gingrich seemed to walk back trump's tough talk on a