slamming repealing obamacare without a replacement saying millions can be put in jeopardy. >> make no mistake about it. passing repeal without a replacement would be a disaster. our health care system would implode. millions would lose coverage. coverage for millions more would be diminished. >> okay. so, from capitol hill to the white house, we're going to bring you the news as it happens. we're starting with nbc garret who has been covering every moment of this eventful day on capitol hill. let's start with this. explain to us what has been happening there today because much has happened since this morning. the repeal and replace bill effectively died and mcconnell talking about repeal and then maybe replace. moderates already coming out against that. rand paul likes that idea. just make sense of this for me, please. >> i'll try, ali. but the starting point for this, i think, is last night when mitch mcconnell said we're not going with that old plan of