to president hu jintao on wednesday. front and center, the economies of both nations and the growing tensions over trade. and one of the tucson shooting survivors has been arrest and sent to a mental health facility for evaluation. 63-year-old james fuller threatened a tea party member at a ton hall meeting yelling, quote, you are dead, unquote. the tea party member was answering a question about gun control. now, overseas, after a week of voting, ballot counting is under way in southern sudan. at stake, whether the nation remains as it is or split into two separate countries. many voters traveled by ferry or bus, some traveling for days to participate in the historic referendum. president obama congratulated those on their week-long referendum saying the peaceful and orderly vote was an inspiration to the world. so joining me now are three