also underway right now, the first hearing from the new house subcommittee on the coronavirus pandemic. it's focusing on the origins of the covid-19 virus as more intel agencies have recently raised the possibility that the pandemic was caused by a possible lab leak in wuhan. that intelligence is further straining the already tense relationship between the u.s. and china. nbc's josh lederman is following this from hong kong. what have we heard so far from this hearing? what does it mean for u.s./china relations? >> a big focus of this hearing so far, lindsey, has been on whether it even is important to get to the bottom of the origins of the covid-19 pandemic. and to really try to cast a spotlight on how critical it is in the view of those who have called this hearing that this be solved and that an investigation really be carried out to completion. every single one of the witnesses was asked today in the first minutes of this hearing whether figuring out whether