katie couric. smith: good evening. katie is on assignment. by now, you know the setup democrats and republicans trying to agree on a budget. they are still far apart. and a government shutdown is coming friday when the clock strikes midnight unless they strike a deal. and now president obama is turning up the heat, calling the republican house speaker and democratic senator majority leader to the white house tonight. what will happen if the government does shut down? congressional correspondent nancy cordes is on capitol hill with the details. nancy, good evening. reporter: harry, good evening to you. congressional leaders are sounding slightly more optimistic tonight about their negotiations but time is almost up so the administration is finalizing its plans for a shutdown. well, i think we ve made some progress, yes, but we are. we are not finished, not by a long shot. reporter: that wasn t good enough for president obama who told congressional leaders today to act