. >> naming these buildings for isaac harkins and anne-marie craft is the beginning of our journey together towards the healing from the jazz with of georgetown's legacy of slavery. announcer: pennsylvania congressman matt cartwright holding a town hall meeting. we have moved the needle on this discussion. it used to be, no waiting, know-how on anything like the aca, but now it is, let's make it work. >announcer: marlo lewis on science and public policy. >> to the extent it is possible, scientific research should similarly be separated from government. then you would not find climate science in particular being a faction written -- faction-ridden, orthodoxy in forcing political movement, but rather the quest for knowledge. announcer: treasury secretary steve mnuchin. >> the objectives are simplify personal taxes, create middle income tax cuts to spur the economy, and make our business taxes competitive. announcer: former ambassador to afghanistan brian cropper. >> we have got to work with the afghans to stabilize the situation against a taliban onslaught, and then move ahead with a politica